Exposure to bright light increases testosterone levels and enhances sexual satisfaction in men, including those with low testosterone, a recent European study revealed.
Sunlight Provides More Than Higher Testosterone Levels
Scientists used to think the only reason sunlight was healthy was because of the vitamin D it provides. Now they know there's a lot more. Your skin contains large amounts of nitrite and nitrate, and studies suggest that sunlight prompts the conversion of nitrate to nitrite and nitric oxide (NO).