Exercise for the Transversus Abdominis (aka the muscle that pulls in the ring of your waist). Here’s what you can do along with your usual ab workout: Get on all fours, back straight, looking down. Exhale completely, then hold your breath. Pull your belly toward your spine as hard as possible for 10 seconds, while continuing to hold your breath. Inhale. Take a few breaths, then repeat 10 times. Later, you’ll probably feel as though you’d been laughing at something REALLY funny.