How to do: Alternating Fire Hydrants

Start on the floor with your hands directly underneath your shoulders and your knees underneath your hips. Keep your body still and lift one of your knees out to the side and back to the floor. Alternate to the other side.

Join the millions of exercisers who use Workout Trainer to get fit, fast! Go PRO+ today to unlock the best mobile workout experience, plus all custom training programs!