Place both hands on the ground, shoulder-width apart, and fully extend your legs so your body is in one straight line from head to toe. You should be resting on the balls of your feet. This is your starting position.
Hold this high plank for 15 seconds, bracing your core and pulling your abs in toward your spine.
Push through your hands and lift your hips, letting your head drop between your shoulders and your ankles sink toward the ground. You should feel a stretch in your calves and the backs of your thighs in this Downward Dog position.
This counts as one rep. After a few seconds, shift back into the plank position to hold for another 15 seconds. Repeat for 10 reps.