Start resting on all fours with your hands under your shoulders, knees under your hips, and toes tucked.
Walk your hands forward about six inches and shift your body forward so your shoulders are directly over your wrists. Press your hips forward so your body is making a straight line from shoulders to knees.
Engage your core and tuck your pelvis slightly to make sure you're working your abs. Keep your neck long, gazing at the floor about a foot in front of you.
Hold for 10 to 30 seconds, then rest for a maximum of 30 seconds.