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11. We have stronger immune systems.

No wonder men act like such babies when they have a sniffle  women really do have stronger immune systems than men! If there are little battles going on in our bodies, women have a secret weapon: estrogen. A study done by McGill University indicated that estrogen gives women an edge when it comes to fighting off infections. That's because estrogen confronts a certain enzyme that often hinders the body's first line of defense against bacteria and viruses.