A period that comes every cycle at exactly the same time is not the norm. Of course cycles are irregular when they’re first starting, as they’re coming to an end, and around the times of pregnancy and changes to contraceptive methods. But even outside of those times, slight variations in timing and symptoms are common.

Instead of shedding the uterine lining, most animals just reabsorb it back into their bodies. Humans, it’s thought, are different because our uterine lining is thicker and thus can’t be fully reabsorbed.

In general, the evolutionary advantages from the processes resulting in spontaneous decidualization and subsequent menstruation appear to favor the mother, particularly protecting from placental invasion, protecting the mother possibly from limited embryos, and protecting the uterus for future pregnancies.

Menstruation is the process in which the uterus sheds blood and tissue through the vagina. This is a natural and healthy process for girls and women of reproductive age.

At the same time, there are people who menstruate who aren’t cisgender women. They might be trans men, intersex, genderqueer or nonbinary. Menstruation is a biological function; it’s not a “woman thing.” It’s an experience that can be highly variable, and mean different things to different people.

Make a pitcher of cucumber, mint, or lemon water to drink throughout the day for a spa-like treat. Sip a cup of low sodium broth to increase your fluid intake. Staying well hydrated isn’t just good for cramps, it’s good for your overall health.

Walking or running: Walking is a gentle and low intensity workout. If you do not want to do anything hardcore then just go for a small walk outdoor. This will help to uplift your mood and you will be able to burn some calories. If you are done with your period cramps then you can also go for running.