quadriceps,deltoids,calves,rectus abdominis. Two key stretches for supporting enhance your kick Pigeon stretch for quads, groin and hips Reverse 1/2 moon improves stability, stretches hips, legs, chest and spine. Side Kick A uniquely sturdy kick and plenty utilised through kickboxers internationally. This kick has a number of versions but the key factors stay the same Muscles used Quadriceps Gluteus medius Calves