body extension activities Resources: Standing Posture Check Seated Posture Check Lying Posture Check – On Back Lying Posture Check – On Stomach Seated Foot Articulations Lying Développés and Clams Back to the Active AP Program In Gym Tools Home Page Standing Posture Check Seated Posture Check Lying Posture Check - On Back Lying Posture Check - On Stomach Seated Foot Articulation Lying Développés and Clams