Are you feeling sad, angry, or out of sorts? Are your co-workers avoiding you like the plague? No, this isn’t a medicine commercial, but it is a warning that you might need a few extra doses of great sex.

Nope, we’re not kidding.

Whether you’re in a serious relationship or have more of a friends-with-benefits arrangement, these 13 indicators could be signs you need more “action” in your life.

Find out if you fit the description here.