Sunlight exposure stimulates the production of beta-endorphins, which are important for immune system health and wound healing.

“get real ultraviolet light don't just get a vitamin d pill there are many benefits to vitamin d we know this i think that making vitamin d in your skin from ultraviolet light from the sun is better you get more nitric oxide you get nitric oxide in general you get endorphins both of those have positive effects in humans in training your circadian rhythm and perhaps there are all of these hormonal benefits in fact we know there are hormonal benefits from ultraviolet light on the skin that you don't get from a vitamin d pill necessarily”

“get real ultraviolet light don't just get a vitamin d pill there are many benefits to vitamin d we know this i think that making vitamin d in your skin from ultraviolet light from the sun is better you get more nitric oxide you get nitric oxide in general you get endorphins both of those have positive effects in humans in training your circadian rhythm”

“sunlight in the proper dose has unique benefits for humans”

“But getting out in the sun will help and train your circadian rhythm. It'll help with your hormones. It could raise your testosterone. It could improve your gut microbiome. It might help you lose weight. It might improve your metabolic health. It's going to help you dilate your blood vessels. Look at those pipes. It's going to improve your mood. It's going to increase endorphins.”

“You also make endorphins when you are in the sun. Those are feel-good chemicals.”