What Is the Best Sleep Tracker?

Sleep trackers are about 70% accurate in tracking your total sleep, and maybe 50 to 60 % accurate in terms of your deep sleep versus your rem sleep. We will soon release an up date where, i think, and i don't know of other company's release their data, it will be the industry standard. The first thing i look for is my efficiency of sleep. An efficiency tells you about the continuity of sleep. And so i, i've been able to see the decline, but i'm still soldly bova.