crossfit

Challenge your abs with this move.

This move hits nearly every muscle and sends your heart rate soaring.

Boost your balance and coordination with this move.

Sometimes when you step outside of your comfort zone, you discover your inner strength.

Devotees of the training regimen say you don’t need long runs to train for distance running.

She's lost 80 pounds–so far–through marathon training.

Here's how to work high-intensity strength training into your running plan without risking fatigue.

Some physiological data from one popular workout.

Devotees of an intense new training regimen say you don't need long runs to train for distance running.