| > It’s just collecting data for the sake of collecting data. No, sleep is one of the most important parameters for health! If in 2024 you are not collecting data on your sleep to take action (and for ex, stop overtraining, reduce drinking etc) to reduce the risks of future brain problems, you are doing it wrong. > Even if it was accurate, I can just tell by feel I can't, and I fear it may be the same "overconfidence" issue that cause car accidents when drunk. I collect logs with my sqlite based bash history collection that I've been running for 5 years: https://github.com/csdvrx/bash-timestamping-sqlite Thanks to my garmin, I have identified a pattern where I feel ok, but my garmin reported less REM sleep than usual: in the day, I run more commands than usual but I have way more mistakes (as can be seen by the non-zero return values) So now, when my watch reports low REM sleep, I try to be very careful to avoid negative-productivity days |