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.

In particular, the use of medical tray tables is prevalent in hospitals, outpatient clinics, and long-term care facilities. In surgical settings, they are indispensable for holding instruments and supplies close at hand for surgeons and assistants. In outpatient clinics, they can be used to facilitate routine check-ups and enhance the efficiency of small procedures. Similarly, in long-term care facilities, tray tables are beneficial for serving meals, holding personal items, or assisting patients during rehabilitation exercises.