Instruct participant to lie prone on mat or floor. Straddle participant facing toward feet. Knee beside participant with leg extended over or just above participant's hips. Bend participant's near knee and place hand under participant's upper leg and opposite hand on ankle.
Lift knee and push ankle down toward hip. Hold stretch. Repeat with opposite side.
The opposite leg or thick towel can be placed under participant's near knee (and above participant's far knee) to further stretch Rectus Femoris. Tibialis Anterior can be stretched if ankle is completely plantar flexed. See PNF stretch techniques. Also see Prone Quadriceps Stretch for similar static stretch.