The single leg plank on the medicine ball is an intermediate core exercise. This exercise is very challenging because not only are you balancing on one leg but you also have to stabilize your body on the medicine ball.
The medicine ball double leg drop is an intermediate core exercise. This is a challenging exercise that targets both the upper and lower abs.
The medicine ball crunch is a progression of the basic ab crunch. This exercise incorporates the medicine ball to add some resistance to make the exercise more challenging.
The abdominal crunch-up with the medicine ball is an intermediate core exercise that really hits the midsection hard. You must have good lower back strength in order to perform this exercise properly.
This is an intermediate core exercise that targets your entire mid-section.
The seated medicine ball twist is a core conditioning exercise that targets the abs and obliques.