Instruct participant to stand or sit on floor, chair, or bench and place arm overhead. Standing behind participant, grasp their wrist and position their forearm behind their head.
Pull participant's wrist toward back of shoulder. Lean torso to side, away from direction of arm behind head. Hold stretch. Repeat with opposite arm.
Participant can be asked to lean torso away from side with arm behind head. See PNF Overhead Triceps Stretch for similar exercise which can be performed with this stretch. Also see Overhead Lat Stretch for similar static stretch. Long head of triceps is only stretched if elbow nears complete flexion.