BodyGem RMR Tester [Weight Loss] is an FDA-approved device that scientifically measures resting metabolism, or the number of calories a person burns at rest each day. Understanding a person's unique metabolism and monitoring changes allows ultimate control in managing weight. The BodyGem uses advanced sensor technology to measure a person's consumption of oxygen, the universal fuel of metabolism. The sensors in the BodyGem accurately measure volume of air, oxygen content, temperature, barometric pressure and relative humidity. Place the noseclip on your nose, then begin breathing into the machine using a specially designed disposable mouthpiece. You'll get an accurate RMR (Resting Metabolic Rate) measurement in about 10 minutes. This is available in all of our clinic with prior appointment, affordable.