Instruct participant to sit on floor or bench and clasp hands behind head, facing forward. Stand behind participant and position leg behind their head. Place hands on participant's elbows.
Pull participant's elbows back while stabilizing participant's torso with leg. Hold stretch.
For more flexible individuals, placing leg behind their knee may not be required to gain leverage as is required with less flexible individuals. See PNF stretch techniques. Also see Behind Head Chest Stretch for similar static stretch.