MOST THINGS WE do are forward-facing. We walk forward, reach forward, bend forward—of course, because we primarily see in front of us. That’s caused us to put an emphasis on the aesthetics of the ...

1. You're most likely to rupture your chest muscles in your 20s and 30s. Chalk it up to ego. Tears in the pectoralis major -- your largest chest muscle -- typically occur in men trying to bench-press ...