15 Minutes to Flat Abs: The No-Equipment Workout
I love these abs exercises for when I'm traveling, can't get to the gym, or simply don't have access to any equipment. By using your body weight and focusing on technique, you'll carve a six pack out of your core, compliments of Eat This, Not That! for Abs. Try not to rest for more than 30 to 45 seconds between each exercise—and embrace fact that you have no excuses.