Men’s Health features a list of 14 body-hacks: ways to manipulate your body into doing things you didn’t think it could do.
12. Make your heart stand still!
Trying to quell first-date jitters? Blow on your thumb. The vagus nerve, which governs heart rate, can be controlled through breathing, says Ben Abo, an emergency medical- services specialist at the University of Pittsburgh. It’ll get your heart rate back to normal.