Restoring balance and flow is central to healing the body and mind. As a healer your hands must be cold when attempting to cool parts of the patients body and warm when attempting to heat them up. No one chakra should be warmer than another when your session is over. Changing the temperature of your hands may come naturally to you or through practice but rest assured that doing so is among the basic competencies of any healer.
See, the body is in a perpetual state of healing itself because maladies are constantly trying to infiltrate the human frame. Therefore, any body that is in a perpetual state of imbalance will be devoting its resources to reinstating the balance. If, as a healer, you are able to restore outward balance for the patient, then he or she may be able to devote its resources fully to restoring balance within.
When imbalances persists, diseases form.