Confirmed: Women are the tougher sex

Researchers from Ghent University in Belgium have determined that the secret to women’s super immune systems lies in their extra X-chromosome. These chromosomes are packed with molecules called microRNAs, which just so happen to be key in regulating the immune system.

Men only have one X strand, but women are lucky enough to have two. When one of a woman’s X-chromosomes is compromised, the other one is quick to kick in and pick up the slack — kind of like a back-up player for your body. Perhaps that’s why you’re likely to find men moaning in agony over a tiny cold, while women are able to power through, and look chic doing it.