If your sleep tracker is one of these consumer devices that you put on your wrist, they are notoriously unreliable (here is a study https://www.ncbi.nlm.nih.gov

If your sleep tracker is one of these consumer devices that you put on your wrist, they are notoriously unreliable (here is a study https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7603649/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7603649/ ). Worse, they have been shown to cause unnecessary stress by causing people who are actually perfectly fine to chase numbers. As for how to improve sleep, there are plenty of advise, many of them commonsense (see in this thread). But I think that unless you are actually followed by a healthcare professional, in which case he would probably give better advise than random people on HN, how well you feel the next day is probably a better metric than some number on a smartwatch. And if the answer is "fine", I don't think there is a reason to worry much.