Connect one end of a resistance band to a D-ring on an ankle strap, and attach a handle to the other end. Do the same for a pair of resistance bands. Grab handles with underhand grip. Elbows bent with the upper arms and forearms in line to the torso held just above the shoulders.
Pull the handles upward leading to your head until your arms are fully extended. Allow wrists to flex as handles rise upwards. Lower and repeat.
When handles are raised, elbows should be to sides, not too far forward.