Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.

When a woman has sex, she produces amounts of the hormone estrogen, which gives a shine to the hair and a smoothness to the skin. Increased blood flow means a flush of the cheek and even a pout of the lips. And because sex also increases the production of collagen, having sex can ward off age spots and sagging. Some even call sex the real fountain of youth.