I asked an expert if using a fitness watch could really help my sleep

How do you use your sleep tracking data?One of the first things I do when I wake up is check my smartwatch to see how well I slept last night, and I know I’m not alone. You can use your fitness watch or sleep tracker to monitor your overall sleep quality, and to check these changes are working.“I would call this little regime a ‘reset’, so you get better quality of sleep at night,” said Romiszewski. Consistently done, you will notice an improvement in sleep quality and duration.”Here’s where fitness trackers come into play: by measuring overall sleep quality, trackers can be incredibly helpful in monitoring your progress and ensuring these changes are landing, says Romiszewski. If you’re still feeling groggy upon waking, take a look at your fitness tracker’s sleep cycle data: you may need to adjust your wake-up time 15 minutes earlier or later, to avoid waking up in the middle of a REM or deep sleep phase.