A Standing Ab Workout You Can Do While Watching TV

"Cross your lifted leg over your standing leg towards the inside diagonal. Squeeze your inner thighs and rotate your torso away from the lifted leg," says McEwen. "Open your leg to the outside diagonal as you twist your torso towards the standing leg. Move between these positions from your core and lower the lifted leg if you feel any gripping in the front of your hips. Do 30 seconds on each side."

Images courtesy of Maeve McEwen