Mix-and-Match Workout: Results in Half the Time
Lower body: Skater lunge
Stand with feet shoulder-width apart, holding a 4- to 6-pound medicine ball (or dumbbell) in both hands in front of you. Step your right leg diagonally back behind your left, and lower into a lunge, bringing the medicine ball down to the outside of your left knee; tap the ball on the floor.
Return to standing and reach the ball overhead. Repeat on opposite side.