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Has Body Battery changed recently?

I've noticed a bunch of entries about the Body Battery not changing. This isn't my issue.

Until recently, my Body Battery would tend to rise to 100 every night as I was sleeping. But recently I've noticed that it is not climbing significantly while I sleep. It is rising, but not so drastically as before. For example, yesterday it reached a high of 81 and a low of 12. But today it didn't rise much while I was sleeping, and reached a "high" of 17.

So the question is if the entire body battery calculation was changed with the latest update to the software? Or am I just not getting high quality sleep? (According to my watch, I got 8 hours and 49 minutes of sleep, divided 8 minutes of deep, 2 hours and 35 minutes of REM, 6 hours and 6 minutes of light, and 34 minutes awake. But that seems like the numbers I would routinely get while increasing my body battery to 100 almost every night.)

Top Replies

Zenginerd over 4 years ago +1

Changed? Doesn't look like it to me. I've gone all the way back to early November (below) and have had values ranging from a low of 5, up to 100, and everywhere in between.

Sleep tracking on this…

All Replies

0 Aurelie over 4 years ago

I personally didn't notice any difference but I don't trust it at all. I seem to lose the same amount of "battery" regardless of what I do. A 10 min walk in the morning has the same effect of 1h of running.... Makes no sense to me.

0 winfij over 4 years ago

It's based off the stress score - if you turn on showing that in the body battery graph likely it was at a higher stress level. If it's over 25 it doesn't recharge your body score, the lower the faster it recharges.

0 mcalista over 4 years ago in reply to winfij

Agree - overlay the BB with your stress score to get a better sense of what is happenning.

I find alcohol has a big effect on stress and recovery. Anything more than 1 or 2 drinks the night before results in a much higher overnight stress score, and poorer recovery.

0 Zenginerd over 4 years ago

Changed? Doesn't look like it to me. I've gone all the way back to early November (below) and have had values ranging from a low of 5, up to 100, and everywhere in between.

Sleep tracking on this watch is useless, btw. 8 minutes of deep sleep, you say? If that were actually true, you'd be a zombie the next day. A healthy adult should see between 1 and 2 hours a night.

0 MarinusvD over 4 years ago

I also noticed that the recovery during sleep is not climbing as before ! i have about 2 1/2 hour REM and 1 or 2 deep sleept moments each night voor one hour or more.

0 Oren over 4 years ago

I'm running the 4.06 beta.

I had this phenomena too just the other night or two when I only gained 7 points of body battery during a regular night sleep and reached a high of 12?!?

This was after a long MTB ride I had.

I then had another long MTB trip which I finished @ score of 5...

I suspect I was influenced by this: https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-945/162607/stress-not-working-after-workout-is-complete?ReplySortBy=CreatedDate&ReplySortOrder=Descending

Maybe it is related to your situation as well.

The weird thing is that it is not the first time I sleep after a long ride and never had to restart my watch to gain real values.

I restarted it after the 2nd day ride and following the night sleep and it all came back.

See my snapshots from Jan 30th, 31st and Feb 1st.

0 Fredrik_Coulter over 4 years ago in reply to Oren

I think you might be on to something. Last night I reset my watch before going to bed. This morning my sleep time pushed it back to 100.

It might be a good idea to my phone off and on before bed in the future.

0 Oren over 4 years ago in reply to Fredrik_Coulter

Always happy to help.

Was surprised myself with the phenomena after long usage of the watch...