A Quick and Effective Core Workout

Reps: 10 each side

• Begin on all fours with your hands directly under your shoulders and your knees directly under your hips.
• Bring your abs to your spine to keep your torso stable as you reach your right arm forward and left leg back. Reach through your left heel to engage the muscles on the back of the leg and your butt.
• Bend your arm and leg to touch your right elbow to your left knee under your torso.
• This completes one rep. After completing 10, switch sides.

The simple move, also known as quadruped, works your abs and back simultaneously, making it one of the simplest core exercises around.