According to a new study, women average 25 more minutes of nightly shut-eye and 10 more minutes of deep REM sleep than their male counterparts, reports Well+Good.

If you regularly use an activity tracker, you might spend less time poring over the sleep data than juicier metrics, like your step count. Because even though you very well may have woken up five times last night, you can’t even remember it happening—but you certainly remember that long walk home from work!

Now, the shut-eye stats are being put to great use: Wearable activity tracker brand Fitbit has been collecting it (anonymously), and finally there’s a big and hefty data set to study how humans sleep.