An exclusive look at Tough Mudder's latest challenges.
- Superfood SidesYou don't have to feel guilty about having seconds (or thirds.)
- Curls for Bigger BicepsGet bigger guns with this barrage of bi-blasting moves.
- Adonis WorkoutThis routine earned Michael B. Jordan the body of a god.
- High-Tech KicksThese 9 running shoes might actually make you *like* to run.