Because badminton promotes physical fitness, it helps to reduce stress and anxiety. Exercise increases endorphins, which are the brain's feel-good neurotransmitters, and has also been found to improve mood and sleep. Badminton is also likely to put you in a good mood because it's a social activity. You'll need at least one opponent, but you can also play with a teammate and two other opponents. The social interactions of a game, combined with feel-good endorphins, will result in positive feelings after a session on the court. If you play outside during the summer months, you will have the added bonus of vitamin D exposure from the sun as well.