Hand and foot temperature can be measured with any thermometer, but effective thermal feedback requires a relatively sensitive and accurate thermometer that tracks changes in temperature relatively quickly (has a short time constant).

 We do hand-warming with the hands together, index fingers opposed to the little fingers of the opposite hand, and ask the individual to attempt to feel anything that would indicate that the hands are warm or warming. This could be the sensation of warmth itself, a dull tingle in the hand, or pulsing in the fingertips. When such sensations are observed, the individual is asked to allow these sensations to get stronger. The results of doing this correctly can be seen on the thermometer.

 Our goal is to get the fingertips to 97 degrees F., and to hold that temperature for 10 minutes once per day for at least five times per week. That is sufficient practice to ameliorate or prevent many stress-related problems. Over time, less and less practice is required to maintain results as the hands stay warmer most of the time.