I noted from this article http://kachinaautumn.hubpages.com/hub/Hip-Emotions-Is-there-sadness-in-your-hips that it is hypothesized that unexpressed emotions are lodged lower in the body such as the hips. It is interesting to know that qigong facilitates self-healing as well as yoga, and the author also wrote the following in the comment section:
"there is a spiritual dimension to this topic which the medical community has yet to acknowledge. In Qi Gong as well they call this area the Dan'tien, the centre of life force energy and potent self-healing. Doing some work on my hip openers / chakras, the feelings I observe do have a cleansing element to it."