Eli's Response Exercise could possibly be one of the best things for you. Exercising reduces stress, reduces feeling of depression, and exercise helps the immune system in fighting of sicknesses. With all of these benefits and many more exercise is an overall beneficial thing to incorporate in your life. Exercise is important for everyone but especially during the teen years because exercise reduces stress, makes you a more confident person and detoxify's the body. No matter a persons age one should exercise daily for at least an hour of a vigorous workout. Exercise reduces stress causing you to be a happier person. Brennan states, in the article that, "exercise reduces the amount of stress hormones in the body (Brennan 10)." By exercising