MUSCLES ENGAGED Obliques Many people put a lot of focus on working their abs but forget their surrounding neighbors; the oblique muscles. Obliques serve as stabilizers, and are used in almost every physical activity. Exercising your obliques should be a very important part of your workout program. Equipment Used Bosu The BOSU balance trainer stands for "Both Sides Utilized" and is most often used for balance training, various athletic drills and aerobic activities. Exercise Instructions Step 1 Start in a side plank position on top of the Bosu. Make sure to keep your hips high and your core engaged. Step 2 While maintaining a solid side plank, raise your top leg. Make sure to keep your top foot parallel to the floor or your toes pointing slightly towards the floor. Step 3 Lower your leg back down to the starting position and repeat.