Hip-centric postures are generally considered grounding, though some are more calming while others more energizing. Depending on the type of movement and use of the joint, hip-centric postures can be effective either for building strength or for increasing flexibility through the muscles of the hip. Many of the postures in this category are usually safe for most shoulder, wrist and elbow injuries, and some are safe for certain ankle, knee or spine/lower back injuries.