Walking around like a rain cloud? Get some sleep—it can enhance positive memories!

In one study, the sleepers remembered more happy images, such as (you guessed it) cute puppies. Sleep already has a laundry list of beauty benefits.

It can help you maintain heart health, a healthy weight and clear skin. Being well-rested even makes you more attractive to other people!

Here’s to thinking happy thoughts—and getting some quality shut-eye tonight!

MORE: Your Beauty Sleep Questions, Answered!