Forget the workouts you’ve tried time and time again – crunches and sit-ups are often ineffective when it comes to trimming away the midlife belly. Consider alternatives, like holding your body in the plank position, or try another yoga-inspired exercise, the cat pose. Directions: Get on all fours. Arch your back like a cat, and work the deep abdominal muscles by inhaling and pulling the stomach back toward the spine. Inhale for 4 seconds and exhale for 4 seconds. For Dr. Oz’s 7-Minute Workout, click here. Find out how exercise may help prevent diabetes.