This simple, challenging exercise is gonna rock. your. bottom. Side skaters are a plyometric exercise that tone the glute med, hamstrings, thighs, and core, all at once. If you're a runner, this move is a must-do: it warms up the lower-body muscles, ups the heart rate, and supports ankle stabilization.

Here's how to do this strength- and agility-building exercise:

• Start in a small squat.
• Jump sideways to the left, landing on your left leg.
• Bring your right leg behind to your left ankle, and don't let it touch the floor.
• Reverse direction by jumping to the right with your right leg. This completes one rep.

If you're brand-new to a workout routine, aim for two sets of 20 reps. For more of a challenge, perform side skaters for one minute, then move through two more minute-long sets, alternating with short periods of rest and recovery. You will feel the burn with this move!