Sand bed therapy involves immersing a patient in warm, dry sand that has been heated to a comfortable temperature. The heat of the sand promotes relaxation and aids in the alleviation of pain. The therapy is based on the principle of thermotherapy, where heat is used as a form of treatment to enhance blood circulation, reduce muscle tension, and support the body's natural healing processes. The finely granulated sand creates a gentle massage-like effect on the body, aiding in the relaxation of tight muscles and enhancing overall comfort.