Step by step instructions
Stand with right foot forward and left foot a stride's length behind, holding one dumbbell with both hands. Lunge forward, bending front knee over ankle, hinging slightly at the hips. Hold the dumbbell behind head with elbows bent in close to ears.
Extend arms overhead (body should make a diagonal line from heels to hands). Bend elbows and lower weight behind head to complete one rep; repeat. Switch legs in between sets.