HRV is indeed a good proxy metric for sleep quality, and I can really recommend Garmin watches for measuring it I'm a little skeptical about my Garmin's abilit

HRV is indeed a good proxy metric for sleep quality, and I can really recommend Garmin watches for measuring it I'm a little skeptical about my Garmin's ability to accurately measure sleep quality. Sometimes I wake up refreshed and felt like I slept very well, only to have my Garmin tell me that I had poor sleep quality (usually because of too little REM sleep), other times I've had a bad night of sleeping (like the dog needed to go out several times) and I wake up tired, and my watch congratulates me on good sleep quality. I wonder if one of the sleep monitors that uses a pad on the mattress would be more accurate.