If there's one thing that can take you out of a bad mood, it's cleaning your room.
Yep, it's a chore, but believe it or not, it's actually a good way of fighting the blues. According to a study featured on Elite Daily, women who have more clutter in their rooms or their homes are also generally sadder and more stressed out as compared to those who have clean living spaces. It actually makes sense—throwing out things that aren't needed is very therapeutic, plus a clean area is more restive.
A mess-free room also encourages you to exercise more. This is based on another study which found that people who keep their flats clean and organized are more likely to fit in exercise in their schedule.
So if you're feeling down, better clean up. You'll definitely feel better after you do.