Exercise can help to regulate the stress hormone, cortisol, which means that exercise may help with acne since cortisol affects breakouts. Cortisol also accelerates aging, which is why it is important to manage stress in general. Cortisol is also associated with weight gain.
Exercising can help with hair growth because it increase blood flow to your scalp, helping to provide nutrients necessary to aid in the development of healthy hair.
Exercise helps to boost circulation, which helps to boost oxygen and nutrients to the skin, giving you a healthier looking glow.
Sweating also helps to clear out pores.
It is important to wear sunscreen if exercising outdoors, or you can just minimize sun exposure all together by exercising in doors.