There are many benefits of exercise. .f First of all, regular exercise help people deal with stress. Physical activity also increases your level of energy. People who exercise regularly feel less tired than people who do not. A third benefit is that exercise can help prevent memory loss. If you are active when you are young and stay active., Yyou can help prevent some of the problems of aging. f For good mental and physical health, experts recommend twenty to thirty minutes of exercise at least three times per week.