Exercise helps to promote blood circulation to the scalp and hair follicles. This eases the supply of nutrients in the blood stream to the hair follicles. "It promotes hair growth and controls hair loss. It also keeps the scalp healthy and prevents pore clogging," says Husain. With regular exercise, hair follicles are nourished by oxygen-rich blood flow that rushes antioxidants to the area to destroy free radicals before they can damage your hair. An added benefit is that when exercising outdoors, your hair could develop a few sunlit streaks for a natural highlighted effect.