Researchers at the University of Chicago recently found that more than half of people between the ages of 57 and 75 admitted to being sexually active, half admitted to having oral sex, and a quarter of the women admitted to masturbating. Now, before you go saying "Eeeeew" and start making jokes about denture-free cunnilingus (quite possibly not a bad idea...), remember that you too will probably--hopefully--be old and gray someday. So what does this mean for you now? One, you shouldn't feel pressured to check off every sexual box before your 25th birthday: you've got plenty of time.  Two, you should develop healthy sexual habits now, like a dedication to safer sex, a willingness to try new things, and masturbating regularly...that will serve you well into old age. And three, you should take advice from your elders--they're not as square as you think!