Start standing with your feet hip-width distance apart, holding a dumbbell with one end of the dumbbell in each hand.
Squat, and twist left to hold the dumbbell on the outside of your left leg.
Exhale, and lift the weight diagonally across your body, ending twisted to the right with the dumbbell above your head. Pivot on your left foot as needed.
The rotation should be coming from your core. Remember, you are moving with force but also control. Don't give into the momentum of swinging the weight around. If you feel like you don't have control over the weight, choose a lighter dumbbell.
Control the weight back down to the starting position. This counts as one rep. Repeat on the right side.
Perform this exercise for 40 seconds, then take 20 seconds of rest.