We tend to focus on the cardiovascular benefits of physical activity, and those are important. But anything that promotes healthy circulation also helps keep your skin healthy and vibrant.
Exercise helps nourish skin cells by increasing blood flow, and keeps them vital. Blood carries oxygen and nutrients to working cells throughout the body, including the skin. In addition to providing oxygen, blood flow also helps carry away waste products, including free radicals, from working cells. Contrary to some claims, exercise doesn't detoxify the skin. The job of neutralizing toxins belongs mostly to the liver. But by increasing blood flow, a bout of exercise helps flush cellular debris out of the system. You can think of it as cleansing your skin from the inside.
Exercise has also been shown to ease stress. By decreasing stress, some conditions that can be exacerbated by stress can show some improvement. Conditions that can improve when stress is reduced include acne and eczema. Although researchers are still investigating the link between stress and skin, studies show that the sebaceous glands, which produce oil in the skin, are influenced by stress hormones.
Of course, being outside in the sunshine when working out is a brilliant way to increase your vitamin D. Vitamin D boosts your immune system, helps fight depression, promotes bone growth and prevents osteoporosis, so it’s an important vitamin to have. Just be sure you wear sunscreen.