
6. Seated Knee Tuck
A seated knee tuck affords you some great benefits, but a seated knee tuck with a medicine ball increases those benefits a few times over. The primary muscle groups that it focuses on are the ones in your abs, and it also targets secondary muscles, such as the transverse abdominis, which is the muscle at the center of your core. For this reason, doing seated knee tucks can help you improve your core strength and posture. By forcing you to straighten your back throughout the exercise, you’ll never feel like slouching ever again.
Sit on a bench or the ground with your legs straight. Position the medicine ball between your knees or balance it on your ankles. Place your hands out by your sides to provide you with some balance. Then bend your knees and tuck them towards your chin as you tuck your torso up towards your thighs. Keep the medicine ball in place and hold the pose for seconds. Then return to the starting position. The added weight to your leg will put your abdominals to work.