All since I got my watch active 2 during the automn 2019 the puilse measurement has been extremely unreliable. I have tried a total reset of the watch and also been hoping that there is a SW error that will be fixed in next firmware update (but there ARE no updates).
I have also read on the web and experimented with where on the wrist to carry the watch. Nothing helps. During sleep it often gives "OK" readings and most of the times also if I watch TV or work at the office. However. part of the whole idea of having a "Galaxy watch ACTIVE 2" is to use it during training and as a fitness tracker. A few examples from the last 48 hours.
1) Watches TV and I know that the pulse is somewher between 55 and 70. All of a sudden during a period of maybee 10 minutes the watch says my pulse is around 140.
2) At the gym. Doing squats (5 repetitions/set). The watch gives a max pulse of 210 bpm (real valute is somewhere between 100 and 120).
3) Goes and to some hight intensity interval training, real pulse 170 -180 in the peaks and in bestween 150 - 160. Watch says 82 - 94. AFTER doing the interval training when stretchingh the watch all of a sudden (this is 5 minutes later) starts to say 150- 160 as pulse but by then the real pulse is around 80.
The real measurements above is measured both by "pulse-band" around my chest and with the cycle (samre readings) and that is also what a manual count shows.
SO: The watch gives sometimes MORE than 100% error which make "pulse zones" completely useless. IT also adds an extra dimension of uselessness that it is not even consequent in the way that a higher reading corresponds to a higher actual pulse.
Question:
Are your GWA2's equally useless when it comes to measuring pulse during activity?
Are you using continuous hr monitoring?
Actually, I have tested mine compared to a professional blood pressure monitoring device and both heart rate and blood pressure (BP lab app) were pretty close.
I cannot confirm tho that it gives good results throughout the day, only when tested. Some times I find the peak values of the day to be high enough, yet I am a guy with high resting hr, compared to other people.
Sent from my CLT-L29 using Tapatalk
thanito said:
Are you using continuous hr monitoring?
Actually, I have tested mine compared to a professional blood pressure monitoring device and both heart rate and blood pressure (BP lab app) were pretty close.
I cannot confirm tho that it gives good results throughout the day, only when tested. Some times I find the peak values of the day to be high enough, yet I am a guy with high resting hr, compared to other people.
Sent from my CLT-L29 using Tapatalk
Click to expand...
Click to collapse
Hi and thanks!
Yes I use continous HR monitoring.
Mine often gives accurate HR readings if I try when sitting still at my desk or just testing in the kitchen. It is during activity it is extremely unreliable. Did you test at any time during any type of excercise?
(mine is sometimes unreliable even when sitting still or watching TV but in thoose case the "normal" is that it gives correct measurements on HR)
Hi, I handled it in to Samsung and a few weeks later I got it back, they said some hardware was bad and had been replaced (so I lost the info in Samsung Pay and the LTE-connection). Reinstalled everything and started using it for training.
While stretching it constantly showed a puls between 140 and slightly above 160 (actual pulse was below 70). Did thereafter some training with cycle indoors and did intervalls and then Watch Active 2 said the pulse was aorund 90 BPM (actual value here was from 160 to 178 in thoose intervalls).
That leaved me with a "fitnesswatch" that only gives correct readings when watching Netflix so I have now handled it back to Samsung and claimed my money back. There is a lot of good things to say about the watch but there is a limit to how bad a key function of a product can be.
I would still be interested to see if other people have made it work fine during training or not.
BR
Related
Does the moto 360 come with its own app or any way to continuously monitor heart rate? Or does it just give you a single reading which is entirely useless?
Haven't quite figured out how it polls, but it has a tracker for minutes of activity that seems to register if I do something strenuous. Not sure about heart rate...
I think it measures heart rate every 5 minutes or so. There is another app mentioned on android police that constantly monitors it but I haven't tried it.
Sent from my HTC6525LVW using Tapatalk
I've been using it often because I think I am experiencing the early stages of high blood pressure so I'm keeping track of my heart rate. It appears to monitor it when you run it but it seems to poll every 5-10 seconds until you close the app.
johnomaz said:
I've been using it often because I think I am experiencing the early stages of high blood pressure so I'm keeping track of my heart rate. It appears to monitor it when you run it but it seems to poll every 5-10 seconds until you close the app.
Click to expand...
Click to collapse
Is there a way to keep the watch on when monitoring HR. I know it will kill the battery but its just for my workout, and when the screen times out you have to restart the HR app.
Also anyone find an app to see HR on the phone that's measured on the watch? its nice to have the phone sitting on the magazine rack of the treadmill.
Has anybody started working with moto 360? How accurate is the watch?
I ran with it the other night. From a steps perspective it's count was comparable to another pedometer I have, so I'd say it was pretty accurate.
Sent from my Nexus 5 using XDA Free mobile app
The background heart rate monitor is really bad though. I really liked that it encouraged you to do 30 mins of vigorous activity a day. I thought it would really help me get in better shape.
The pedometer I agree is fairly accurate and is not off by more than 200 with my LG G3. I try to take 8,000-10,000 steps I take a day so being off by 200 is very good in my books. But as far as keeping track of my daily exercise, there are 2 issues with this... The first is it would be nice to change my vigorous activity goal to 45 mins, 1 hour, or any other value. 30 minutes is recommend by the American heart association but I am sure that trying to double that goal daily would be even better. This issue should be fixed very easily and hopefully soon too. The other and more important issue is how bad it is at keeping track of your exercise time.
Here is how my day went: I woke up and after I put my watch on, I WALKED downstairs and ate a quick breakfast and hopped in my car for work. Then I took an ELEVATOR to the 7th floor and SAT down in my office. After an hour or so of sitting there, I was alerted that I was halfway to my goal for the day or rather Motorola's goal for me... I can pretty much guarantee my heart rate did not go over 90-100 beats the whole time yet somehow the 360 gave me credit for 15 minutes of vigorous exercise. I hope that this like the first issue is a software issue. If it is a hardware issue which it easily could be, the background heart rate monitor is completely useless until the moto 360 2 or whatever they want to call it comes out.
The other weird thing is when I request for my heart rate to be measured, it seems fairly accurate. I don't have any experience with other smart watches but I know this one is not bad. I changed it so that it uses google's app to measure my heart rate which gives me hope that it is just a software issue with the background heart rate monitor and that it will be fixed.
I still think I am going to be keeping the watch for the time being despite the crappy processor, sub par battery, and bad background heart rate monitor. I am excited about android 5/ L/ Lemon Meringue Pie/ Lollipop. I think the software upgrades will make this very good looking and ok performing watch into something of a beast.
I saw some other threads out there (mainly on samsung's site) complaining about battery drain issues. I found them because I was having battery drain issues. So why am I starting a new thread? because I'm not complaining here. I am as scientifically as I have the patients for documenting what my battery life is while playing with various settings. I am starting by trying to get the most extreme positive battery life as possible. Then I will work my way back with features I would like to use to determine what is worth it and what is not. Feel free to join in the conversation with your own tests and results as well as requests for me of additional information on my settings or tests you would like to see. The more conversation here I see the longer I'm likely to continue running tests.
Hardware
46mm Bluetooth Galaxy Watch
Note: I also have access to a 42mm Bluetooth Rose Gold Galaxy watch and 2 Gear Classic watches.
Background
I started doing this because I upgraded to the 46mm Galaxy watch because I was only getting ~2.5 days out of my wonderful Gear S2 Classic. The advertized 4 to 5 day battery life with rumors of 7 days was just too good to pass up on. Plus I found an open box for a very reasonable price. By day 3 I was noticing that my battery life was terrible. At best it was the same as my Classic.
So I ran a little test. I wiped the phone Saturday morning. Charged to 100% and waited for the show. By 15 hours I was at 85%. That would total out to 4.16 days of battery life. Well not exciting but it does meet the advertized performance. So I turned on goodnight mode and went to sleep. 5 hours later I woke up and I was at 65% battery. By 29 hours I was at 50% (granted I left goodnight mode on for a lot of that).
After finding out that samsung customer support knows NOTHING about their own products (told me that my S2 didn't have sleep tracking, that the 42mm and 46mm had the same battery capacity, and asked me what color my 46mm BT watch was) I returned it to the store and got a new one. Since then I've been running various tests.
If you have questions about a given test please include the Test # in your post.
Test 1:
Always On Display - Off
Brightness - 3
Screen Timeout - 10 Sec
Good Night Mode - On From 11pm to 7am
Bezel Wake-up - On
Wake Up Gesture - Off
Bluetooth - On
NFC - Off
Notifications - On
Turn On Screen (Notifications) - Off
Samsung Health (Heart Rate) - Manual Only
Samsung Health (Step Tracking) - Off
Samusng Health (Sleep Tracking) - On
Samusng Health (Automatic Excersize Detection) - Off
Screen Capture - Off
Watch Face - Basic (3 Different)
OS Version - 4.0.0.1
Test Length - 2 Days
Battery Drained - 1% every 1:45 to 2 hours. Estimated at 8 days.
So this is the extreme test. Low brightness. No novelty features. No workouts.
I have 4 gmail accounts and 2 email accounts so there is a lot going on there. I've disabled instant messaging notifications and facebook becuase I just find them annoying. If I got a message I looked at it. Check the time whenever I felt like it. I would consider it normal usage. Everytime I would change a little setting I would charge back to 100% so I could get a solid measurement.
What a great number on this. Add in how fast this thing charges and it's a dream. I don't like to shower with watches on so I'll just throw it on the charger for 15-20 minutes and I feel like I might be recovering an entire day's usage. What have I learned? I'm keeping this watch and I'm turning some features back on.
Test 2:
Same settings as test 1 except I'll be putting the brightness up to 5. This is my preferred setting. This will be a short test. Probably let it drop 2% during the busy time of work. Then I'll be moving on to test 3. This will be done today.
Results
This went really well. still about 7.5 days of use estimated. And it was a very busy time for me message wise. This was a small test so I'm moving on.
Test 3:
Also a short test to be completed today. I'm going to put a fancier watch face on. The ones I've been testing with so far were very basic and mostly black. Tomcat has some bonus features but the other two were very very basic.
Edit - Changing this test. Found a watch face I really liked but instead of needing more color it needs more brightness. Brightness of 7 on this one so you can see the detail as it's a really dark face with grey on black text. Watch face is Stealth by ZWF ($1). I'll probably let this one run the rest of the day.
Results
Had great results on this. so these settings were left for my 3 day trip.
Test 4:
This test will be for the rest of the week. Almost a performance test the other direction. I'm going on a trip to the north woods MN with no internet. Just lots of hiking. For this I'll be turning back on heart rate and step tracking. Also When hiking I'll use exercise detection with GPS. But still no automatic exercise detection. I suspect that that feature drains a fair amount of battery given how effective it is.
Results
Well I'm back from the trip in 3 days of heavy use. Flash light app. 15k steps a day. 10+ flights of stairs registered a day. I still had just over 50% battery. After charging up and letting it run for the last 2 days of more normal use I'm seeing about 10% battery used a day. Here is my opinion on some of the settings as I've seen them.
Always On Display - Can be a huge impact on the battery life. Based on my small experiments with it I think it would last a couple of days but not much more. For me it's not worth it.
Brightness - With my other chosen settings this isn't a major impact since the screen isn't on much. I've been running at 7 and still getting 10% per day.
Screen Timeout - 10 Sec is good enough for me. As long as you are interacting with the watch it says on. No point in unnecessary screen time.
Good Night Mode - Slightly improves battery life at night. I'm seeing about 1% every 3 hours. Turns on automatically so there is no real need to turn it on manually.
Bezel Wake-up - This was a big one for me. I can't express how often I bumped the bezel turning on the screen. I'm happy to use the button to turn it on.
Wake Up Gesture - Same as above. Leave it off if you want the best battery life.
Bluetooth - Required on for use of the watch. Ignore people who tell you to turn it off unless you have LTE. Even then Bluetooth is more efficient than LTE.
NFC - I've had this on for most of my testing. No impact to battery. I'm leaving it on.
Notifications - What's the point of the watch without notifications. I do leave it off for facebook because I find the frequency irritating.
Turn On Screen (Notifications) - Leave this off. Unless you are planning on looking at every message that comes in then this is wasted screen time. It's a definite off for me.
Samsung Health (Heart Rate) - I'm leaving this one off for now. I'll run a test with it on once I have good solid data on my current preferred settings but I suspect (based on the time that I had it on) that it's taking a few percentage per day.
Samsung Health (Step Tracking) - Turning this back on had no impact on my battery life. I'm not sure it ever actually turned off in the first place. Which is good news since I like this feature.
Samusng Health (Sleep Tracking) - Leave it on. No real impact on battery life from what I can see. Again. I'm not sure turning it off is really possible.
Samusng Health (Automatic Excersize Detection) - I have this on for Running and Cycling on and everything else off.
Screen Capture - Why? never tried it since I don't care. Off
Watch Face - I tried a few here. Nothing too colorful since I don't like the style but with the screen off most of the time then it doesn't seem to matter much.
If you are seeing poor battery life then try these settings out. Your usage can change the results however if you are down in the 3 day or less range without AOD then I would return your watch and get a new one like I did.
I'm done with my testing for now. I'm happy with my settings. If anyone has questions let me know but in summary the battery life on this thing is amazing. I can charge the battery to 100% while I'm in the shower after a day's use.
Getting 6 days of battery life
Ranop11 said:
Getting 6 days of battery life
Click to expand...
Click to collapse
With HRM on that seems consistent with me. I went 3 days without any charging of normal use (including a couple of phone calls) and ended with 53% battery life. I'm going to get it charged up and see how things go with AOD. I'm guessing based on my short tests it's going to drop down to around 3 days.
I have the 46mm. I'm happy getting 2+ days while having Always On enabled and brightness at 7. Previously with my S2 Classic, I could barely limp to the end of the day with those settings, and sometimes it didn't quite make it, depending on use. I generally recharge it every day anyway, but it's nice that it only needs a brief charge at this rate, and I can disable Always On any time I need it to last longer. I guess I'm just old school and feel like the watch doesn't "feel like a watch" if I can't look at it any time and see the time.
The only power-eating feature I don't use is gesture wake... because it will annoyingly not activate sometimes when you want it to, and of course it activates dozens of times or more every day when you don't intend for it to. I looked forward to trying this again with the Galaxy Watch and the battery life that would make this feasible to use, but in the end I disabled it.
Apart from intensive fitness tracking, step counter is pretty hungry battery eater. I observed that during work hours ( 9a.m. - 3 p.m. ) when I do not move much battery consumption is in average 4-5%. total As I get home and move more ( 4p.m. - 11 p.m. ) it is 15-20%.
I left switched it on as I like it
sancmat said:
Good Night Mode - On From 11pm to 7am
Click to expand...
Click to collapse
How do you set Good Night Mode to a schedule or automatic? I can't find any schedule or automatic detection settings for it anywhere on the phone or watch.
sancmat said:
Samsung Health (Step Tracking) - Off
Samsung Health (Automatic Exercise Detection) - Off
Click to expand...
Click to collapse
Same question as above for all the Samsung Health stuff. I found a setting for manual heart rate but can't find how to turn actually off the things quoted above. All I can find is an option to disable notifications, nothing else. I can't find any settings for them anywhere on the phone or watch.
Thank you for the help!
Maniac78 said:
How do you set Good Night Mode to a schedule or automatic? I can't find any schedule or automatic detection settings for it anywhere on the phone or watch.
Same question as above for all the Samsung Health stuff. I found a setting for manual heart rate but can't find how to turn actually off the things quoted above. All I can find is an option to disable notifications, nothing else. I can't find any settings for them anywhere on the phone or watch.
Thank you for the help!
Click to expand...
Click to collapse
You have to go into the Samsung health app on the watch itself. Scroll all the way down and you'll see settings.
davtse said:
You have to go into the Samsung health app on the watch itself. Scroll all the way down and you'll see settings.
Click to expand...
Click to collapse
That's odd, I have very little under the Samsung Health App settings. All I see is:
Profile, Units, Workout Detection (Healthy Pace, Cycling, Elliptical, Rowing, Dynamic), Inactive Alerts (off/on), Help
And I can't find any of those options under any of those settings menus.
Samsung Gear app on my phone says all apps and the watch OS are up to date. So not sure why I wouldn't have those options but it's not a big deal anyway, I was just curious.
Maniac78 said:
That's odd, I have very little under the Samsung Health App settings. All I see is:
Profile, Units, Workout Detection (Healthy Pace, Cycling, Elliptical, Rowing, Dynamic), Inactive Alerts (off/on), Help
And I can't find any of those options under any of those settings menus.
Samsung Gear app on my phone says all apps and the watch OS are up to date. So not sure why I wouldn't have those options but it's not a big deal anyway, I was just curious.
Click to expand...
Click to collapse
On app on the watch itself? Weird mine has those settings.
The watch it's self. However I don't see any relevant settings in the phone app either.
Something I have noticed since the recent uodate is Samsung Health being #1 in battery usage. During my time with the S3 and the month or so with the Galaxy, watch faces has always been the main user. After the recent uodate, Health is always first now. I don't notice a decrease in battery drain so maybe it's how they calculate usage now.
I have a 42mm galaxy watch , in your opinion what would be the best settings to get maximum battery life.
Hi all,
I've been having this issue with the watch since day one.
The watch is connected to an iPhone.
The heart rate monitor is way too high in a lot of cases, for instance when I sit down and watch TV it's around 55-60 and then peaks to ~150 with no apparent reason as you can seen in the attached photo.
It's not my first smartwatch and I have never had this problem before.
I send it to huawei's labs for inspection and they said it's working fine and it might be issue with the over sensitive sensor and the fact it is connected to an iPhone and not their phone.
Has anyone else encountered this problem?
Thanks,
Ishay
No such issues with my GT2 connected to Android phone.
It sometimes happens that when I put a watch on (it was off my hand for a while and I put it back on) it spikes to high bpm value (i.e. 110 or so), but quickly reduces to normal. During resting/sitting period, bpm remains constantly low, without spikes that you mention.
bokyfly said:
No such issues with my GT2 connected to Android phone.
It sometimes happens that when I put a watch on (it was off my hand for a while and I put it back on) it spikes to high bpm value (i.e. 110 or so), but quickly reduces to normal. During resting/sitting period, bpm remains constantly low, without spikes that you mention.
Click to expand...
Click to collapse
Thanks for the reply!
can you compare my thumbnail with yours? no sport activity during that day..
ishaycc said:
Hi all,
I've been having this issue with the watch since day one.
The watch is connected to an iPhone.
The heart rate monitor is way too high in a lot of cases, for instance when I sit down and watch TV it's around 55-60 and then peaks to ~150 with no apparent reason as you can seen in the attached photo.
Thanks,
Ishay
Click to expand...
Click to collapse
I've never had such issue on pair with mate 30 pro, but on high rates (over 186) suddenly drop to about 135 (1/3 less).
I have an opposite effect but only during training. The watch shows on average 20-30bpm less than my previous 2 smart bands. I've read there should be an improvement with the firmware version 1.0.3.62 but I'm stuck on 1.0.2.60.
I had exact same problems..this morning when I was doing elliptical,the hr went up suddenly 188 and said limit exceeded .once I stopped the tracking it came back to normal , insee this problem after I had set the Huawei mobile service region to China to buy few watch faces..
I finally got 1.0.3.62 update so I'll report back in a few days if the HR has improved.
Hi all,
"happy" to read that I'm not the only one with this issue:
Doing elliptical, raises to 160, LED on back is not flickering but steady on. Stop moving, drops down to 96 (fe). Real rate (according Samsung watch on other arm is 96. Moving again and up to 160..
Started with latest firmware update.. what **** is this...
Exact same problem, with last firmware update, when doing elliptical, heart rate is reportef between 20-40 bpm above what the machine is reading, tried with a camera app and it read the same value as the machine and to make sure trackef my pulse and all were the same but the gt2. My phone is a mate 20 lite. Definitely happenef with the latest firmware. Was ok with the two firmwares before.
I have 1.0.3.62.
the clock stuck to 109bpm. i took it out, i put it on again it showed 75bpm for a while then 109bpm again. To say that I sat for so long. i opened the app and as long as it was stuck there is a gap !!! Last clue at the app 109bpm. The clock shows "normally" that stuck for a while constantly.
With 1.0.2.68 i had no problem!!!
Drastic drop
Mine too. Is it hardware or software?
I have exactly the same issue. Driving along and it will suddenly spike up to 170+ occasionally. Same thing happened the other day walking to the shop peaked to 190+...
Although we could all just be really ill??
I did not experience that issue but the opposite - during workout, the highest HR is usually not as high as it should be, sometimes even 20bpm lower (compared to Polar OH1).
I am facing the same problems. Reading jumps from 55 to 120! When I check against another machine I can see I have 60 and the watch is showing 110! This started after I used it for indoor elliptical and sensor went nuts with wrong readings. Never had that problem before. I will try a factory reset and if not fixed send it back (I have had it for about 5 weeks 24-7)
My brand new HONOR MAGIC WATCH 2 doesn't track heart rate on my wrist, however on my Palm, its tracks properly. Shall I return or is it software issue or hardware?
I have a different problem. My GT2 elegant detects puls and stress levels while I'm not wearin it...Of course it happened after one of latest updates...
Don't know how to fix this and it annoys me alot
Yes I've had the same problem. It's connected to a Huawei phone so not sure why this is happening. Did you manage to solve the problem? I might return mine since it's less than 2 weeks since I received it.
I have similar issue... When starting a workout, even if I'm not walking or doing something the heart rate zones shows "extreme" with 70-80 bpm... Anyone knows a fix?
Hi guys! I don't have a GT2 but GT2e instead, with the latest 1.0.6.20 firmware, and might be a heart rate issue here too. When I bought it, I compared with my Honor Magic Watch (which were replaced because the battery draining very quickly, it lasts now for only 2 days), and the GT2e showed higher heart rate, +10-20 bpm. This weekend, the GT2e showed many times seriously high heart rate, example: during sleep, under2 minutes ramped up quickly to 136 bpm , and then back to 60-70. Today in 5 minutes ramped up from 93 to 149, then back to 121, and I immediately started to check my pulse by counting it manually, and it was between 80 and 90, but the watch still showed 110 bpm. I haven't even do any exercising during that time. I was at the doctor a week ago, ECG and heart rhythm checking, nothing unusual was found, later that day I bought the GT2e.
Could it be possible that those high heart rates measured by the watch are "false alarms"?
I watched video reviews from this watch before buying it, especially about the heart rate accuracy compared to expensive smart watches, and the previous gen. Watch GT, and everyone said that the sensors accuracy is very high, and I'm a bit scared now...
azur3orion said:
Hi guys! I don't have a GT2 but GT2e instead, with the latest 1.0.6.20 firmware, and might be a heart rate issue here too. When I bought it, I compared with my Honor Magic Watch (which were replaced because the battery draining very quickly, it lasts now for only 2 days), and the GT2e showed higher heart rate, +10-20 bpm. This weekend, the GT2e showed many times seriously high heart rate, example: during sleep, under2 minutes ramped up quickly to 136 bpm , and then back to 60-70. Today in 5 minutes ramped up from 93 to 149, then back to 121, and I immediately started to check my pulse by counting it manually, and it was between 80 and 90, but the watch still showed 110 bpm. I haven't even do any exercising during that time. I was at the doctor a week ago, ECG and heart rhythm checking, nothing unusual was found, later that day I bought the GT2e.
Could it be possible that those high heart rates measured by the watch are "false alarms"?
I watched video reviews from this watch before buying it, especially about the heart rate accuracy compared to expensive smart watches, and the previous gen. Watch GT, and everyone said that the sensors accuracy is very high, and I'm a bit scared now...
Click to expand...
Click to collapse
Try to set heart rate tracking to non-stop and not smart. When I did that it works ok. When it is set to smart it measures in 10 minutes interval. So it is written but I think the watch turns on also when you move and then measures your heart beat. When it does that you get high peaks which I think it is the problem in software because friend of mine has GT2 set to smart and there is no peaks.
Hi.
Why does my Galaxy Watch never shows my heart rate at rest? It always shows "- -" heart rate is on always mesure HR
Thanks
Low BP and/or low volume? Especially if lying down. My lying resting BP is like 80/60 at times.
Try rotating 180°
Do you mean there is a way to make it appear? If so then how.
Try repositioning it. If you're below it's threshold detection level not much else to do.
I haven't play with these as I'm aware of my h/r and bp is mostly irrelevant to me. The O2 saturation be interesting to monitor if accurate though.
It's all mostly a curiosity to me and serves me no practical purpose as I've always trained old school.
Do I have to stay relax for a certain time to get a measurement
Bulldog150 said:
Do I have to stay relax for a certain time to get a measurement
Click to expand...
Click to collapse
Well if it doesn't grab in a minute I would expect your bp and volume levels to drop even lower.
You sitting or lying down?
Even sitting ramps bp up considerably.
When your feet/hips/chest/head are level your bp will ramp down to its lowest level.
Remember that if you have a bleeder or head trauma as it can save your life.
Works well with bad nose bleeds too, lol.