If you’d told me that some of the best advice I’d get about what to do between the sheets would come from my grandma, I probably would’ve called you crazy! But that was last week.

This week I know better. What was this advice Granny gave me, you ask? Well, I’ll tell you: sleep with your feet outside the blanket.

Yeah, I know, it sounds like an old-wives’ tale. But it turns out Granny and those Old Wives knew what they were taking about. According to Natalie Dautovich of the National Sleep Foundation, sleeping with one or both feet uncovered may very well allow you to not only fall asleep faster but also to get a better nights’ rest.

Why? Well your feet (and your hands) are biologically designed to help dissipate body heat. So uncovering your feet can channel your body’s heat right out of your body. Dautovich also suggests a warm bath before bed, after which your body will rapidly cool, which in turn primes you for a more restful slumber. Warm beverages tend to have the same effect— which means warm milk before bed really is a good idea.

So get a good night’s rest tonight, and tomorrow call your grandma and thank her!