Let’s be honest: periods can be messy, painful, and get in the way of our cute, new white jeans. Not to mention, our heightened emotions and sensitivity can sometimes make us feel, well, crazy. But, menstruating monthly is a (very important!) indication that our reproductive system and our body as a whole is balanced and working as it should. Our hormones – yes, like those responsible for PMS – affect much more than just our period. They influence everything, from our energy levels to our cognitive state, our nutrient needs, our sex drive, our bloating, and the glow of our skin.