Oblique Burpees 4 x 30 seconds: Standing with your feet shoulder width apart, squat down putting your weight in your butt while reaching your hands toward the floor. Jump with your legs and feet out to one side, land with both feet while keeping your core tight and one leg stacked on top of the other, jump back to center, and then jump straight up bringing your hands overhead. Repeat in the opposite direction.
Side Plank Dips 4 x 30 seconds: Lie on your side with your legs straight and one leg stacked directly on top of the other. Bend your elbow and place it directly under your shoulder while you raise your hips off the ground. Lower your hips and then raise them back to the starting position. Repeat for 15 seconds and then switch sides. To increase the difficulty, rise up off of your elbow and straighten your arm while performing the same movement.
High Knee Crunches 4 x 30 seconds: Start standing with your feet shoulder width apart and reach up high to one side. Next, simultaneously bring your same side knee up and out while pulling down. Bring your elbow to your knee and contract your oblique muscle at the same time. Allow your arm and leg to return to a relaxed position as you begin to repeat this movement on the opposite side. Alternate sides for the prescribed time.