The Power of Muscle & Why Doing Hard Things Transforms Your Body and Mind

Muscle is one of the largest organs in the body. We think the skin's the largest organ in the body. The lining of your blood vessels has six times the surface area of your skin. So it doesn't matter more what's outside or what you put inside. Right? I mean, surface area of your skin is about a half a tennis court. The surface area of the lining of your blood vessels is six tennis courts, 12 times the size. That's why nutrients matter. Muscles actually secrete endorphins. They secrete neurotransmitters that are linked to mood. Ever heard of a runner's high? It's a real thing. You've gotten high from working out. Or you wonder why guys become gym rats. They're addicted to how they look, but they're also addicted to how they feel. Wouldn't it be great that your drug of choice was exercise or a cold lunch? Wouldn't it be amazing if we actually got our dopamine rush from exposing ourselves to cold water or doing hard things? You hear me talk all about time about how aging is the aggressive pursuit of comfort to regulate everything in our lives. It's so not the way that God designed it. So when we do hard things, magic things happen in the human body.