1) Get confident in your abilities.
2) Extend your life expectancy.
3) Raise your quality of life.
4) Look and feel better, dressed or not.
5) Reduced stress levels.
6) Become more energetic.
7) A mood booster.
8) Become more productive due to more energy and better mood.
9) Help you discover who you are.
10) And if you ever get into a situation where it is live and die, you will be harder to kill.