What about the external anal sphincter?

External anal sphincter is the outermost muscle of anal canal. It is striated muscle and voluntary muscle. It is controlled by nerve. External anal sphincter contracts and closes anus, but it is easy to fatigue. External anal sphincter stiffness leads to decreased defecation control and fecal incontinence.

Levator anal exercise can prevent and treat anal diseases and promote anal function recovery. Levator anal exercise, muscle indirect contraction plays the role of "pump" to improve pelvic blood circulation, relieve external anal sphincter stiffness, enhance contractility, improve anal closure ability and improve fecal incontinence.

Hot compress has the effect of activating blood circulation and removing blood stasis, and has special effect on treating external anal sphincter stiffness.