u/Adi-Arya

I am using the band for 2 months now. It did a decent job in measuring sleep data, sleep time and wake ups were almost accurate, but recently for a week it started to show wrong sleep duration, and sometimes it records nap when i am sitting still (which it never did before), and the night time wake ups are also inaccurate (it shows multiple micro wakeups at night and sometimes a 10-15min wake even when i slept soundly). What could be the issue?
One more thing i would like to mention is 2 weeks ago i switched the heart rate tracking frequency from smart to 1min.