Life’S Shallowness

There’s a reason football players, wrestlers, and MMA fighters can compete for prolonged periods without getting winded. Despite expending all that energy, they also never lose significant amounts of muscle. That’s because highly intense activities done in short bursts cause your body to release anabolic hormones that help burn fat and build muscle, while still strengthening your heart and lungs.

The best activity to build your wind without eating away your muscles is sprinting. Go to a hill, track, or field and, after a thorough warm-up, run all out for, say, 50 yards. Walk around until you feel you can go again, and repeat. After your first few workouts, add intensity and increase the number of sprints
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