This challenging exercise improves muscular endurance and core strength. The movement also improves balance and stability of the core.
Position yourself on your elbows and toes, with your body forming a straight line from your shoulders to your ankles. Brace your abs and squeeze your glutes, and spread your feet wider than shoulder-width apart.
Lift one arm and the opposite leg off the floor. Hold, then return to starting position and alternate sides.
Stay rigid and prevent your torso or hips from rotating.
Do not hike your hips high or sag your hips low.
Squeeze your core and your glutes during the entire movement.