I have noticed others having problems with Body Battery dropping after 8/16 update, same as me.
After the 15.05 update, my sleep tracking is also broken with regard to Stress, Heart Rate and HRV.
The past two nights my average stress has been 8 and 6, respectively. I have never had a reading below 16.
In addition, my resting HR was calculated to be 40 and 41, respectively. I have never had a reading below 54.
Lastly (and probably not the only thing), my HRV has been near or over 100 for sleep. I have never been above 41.
See screenshots below and please address this, ASAP!
Stress from 8/20 sleep:
HR and HRV from 8/20 sleep:
