Begin kneeling on all fours. Your hands should be directly under your shoulders, knees directly under your hips, spine neutral.
INHALE: Gently tilt the pelvis forward, dropping hips toward the floor. EXHALE: Pull in your abs as you tilt your pelvis backward, up toward the ceiling to complete one rep. Repeat for 10-15 repetitions, 1-2 sets.
Do not hold your breath. Try to keep your neck in a neutral position. If your shoulders get tired, rest before continuing. Muscles worked: Abs