Diagonal reach with medicine ball
Exercise: Stand tall, holding a medicine ball at your chest with both hands. Lift the medicine ball diagonally overhead to the right, straightening your arms, while extending your left leg to the side, making a diagonal line from the medicine ball to your toes. Lower to start position. Repeat 10 to 15 times for each leg. Increase the weight of the medicine ball and strap 2- to 5-pound weights on your ankles as you get stronger.
BOSU four-point balance
To do it: Position your hands and knees on a BOSU (a). Slowly extend your left arm out in front of you and raise your right leg behind you, forming a straight line from your fingers to your toes (b). Hold for 10 to 15 seconds, then bring your arm and leg back to the BOSU. That's one rep. Rest for five seconds, then repeat with the other arm and leg. Alternate for 10 reps.
BOSU dynamic plank
To do it: Start in a pushup position, with your hands on a BOSU trainer and your feet hip-width apart (a). Lower your left forearm onto the BOSU(b), then your right, keeping your body in a straight line (c). Push back to the starting position, starting with your left hand. That's one rep; do 10 to 15. Rest for 15 seconds, then repeat, leading with your right arm. Keep alternating for two or three sets.