The next time you’re about to have sex, instead of resorting to your go-to moves, consider whipping out one of these crazy-or as we like to think about them, upgraded-sex positions. 'And we want to make sure that we're able to take full advantage of that,' Oriowo says. This means that our bodies' wants, desires, and abilities will evolve naturally over time. 'The things that we did when we were younger may not work for us in the same way as when we're older.' 'Our bodies are constantly changing,' Oriowo says. Remember: Experimentation and discovery are important parts of a healthy sex life, explains Donna Oriowo, PhD, a Maryland-based sex therapist. There's nothing wrong with that (there's a reason so many people are into it), but if you've got the urge to switch things up, you're not alone. So you’ve mastered missionary and and done it a bazillion times already.