http://AskTheTrainer.com/medicine-ball-workouts.html Personal Fitness Trainer Mike Behnken, MS, NASM-CPT-PES, CSCS The wood chop exercise with a medicine ball is all about the drawn in core. If you don't feel this one in your core you do not know how to draw in your core and you should start fresh from the very basic draw in maneuvers. Stand as tall as you can with your stomach drawn in and try to keep your core completely steady as you chop the ball from your shoulder across your body to your opposite hip. Another way to perform this core exercise is to keep your hips completely steady and flex your stomach slightly forward and rotate. To increase the difficulty you may want to stand on a controlled unstable surface such as a wobbly board or BOSU ball. You can get a great medicine ball workout with just your body weight and a couple medicine balls. These will work stabilization as well as strength. Remember the medicine ball wood chop or any core/abdominal exercise will not burn fat off your mid section or give you six pack abs. You must perform a mixture of high intensity cardio and weight training. http://AskTheTrainer.com/best-cardio-workout.html Strength and Conditioning Specialist Michael Behnken, MS, CSCS