It’s important to keep in mind that as appealing as amazing sexual chemistry is, it isn’t going to make or break your relationship. Don’t sweat it if your sex life doesn’t feel effortless; that’s completely normal. If you’ve got matching libidos, that’s just the icing on the cake. There’s probably a better, less sexual metaphor to use there, though.

Most women are used to bloating, breakouts and unruly mood swings every once in a month. However, do you know that in addition to these symptoms, there are a number of other strange and surprising things that can happen to your body when you're on your period. Well, you may not even realize they're a result of your menstrual cycle. But knowing what these less-obvious side effects are, can help you better understand what's going on in your body. And maybe it can even help give you some peace of mind when things feel awry. Here's 10 surprising things that could happen to your body when you are having your period:

​Just like Mae West said, "Too much of a good thing can be wonderful." Which can be very true. But sometimes it can just be, well, too much. If your man is packing large down below, the trick to good sex is twofold: control the depth of penetration and keep him the hell away from your cervix. Here are some ways to comfortably enjoy all his glory.

Humans have the power to create change, and it can start with something as simple (and fun) as making your sex life a little more eco-friendly.

To find out how to go green when it comes to sex, Cosmopolitan.com talked to Lauren Singer, CEO of The Simply Co. and the woman behind the zero-waste blog Trash Is For Tossers. Singer used to work for the New York City Department of Environmental Protection as a sustainability manager and she can fit all the trash she’s created in the past four years into a single mason jar. Below, find 11 ways to have sustainable, environmentally friendly sex and start saving the world while you get it on: