Working is very we can say usefull for us in 9 ways :---
1.Helps you sleep better
2.Slows the aging process & reduces the risk of premature death
3.Builds and maintains healthy muscles, bones & joints
4.Strengthens and boosts your immune system
5.Improves mental activity
6.Improves confidence
7.Increases energy and endurance
8.Reduces stress, depression and anxiety
9.Reduces the risk of many diseases