Forget anti-wrinkle creams, research claims sex can make you look seven years younger and that's not the only benefit - here's our round up for National Sex Day. You probably don't need much convincing, but there's quite a few health benefits to a healthy sex life. There are quite a few benefits to having sex, from boosting fertility to looking young yes that's a thing , you even get healthier sort of. Semen health was found to be best when sex had last occurred less than two days before the sperm was tested and was greatly decreased after 10 days of abstinence.