Step by step instructions
Grab a pair of dumbbells and balance on right leg with knee slightly bent, left leg extended low behind hip. Hold the dumbbells behind head, with elbows bent in close to ears (if it’s too challenging with both weights, hold only one dumbbell).
Draw abs in tighter and bend left knee in front of hip as arms extend to ceiling (weights will be slightly in front of head at the top). Without lowering left foot to the floor (unless needed for balance), slowly return to the starting position; repeat. Do all reps on the first side, then repeat on the opposite leg to complete one set.