The Cunningham equation can be used to calculate your resting metabolic rate (RMR; the calories you burn while you're at complete rest). The Cunningham equation has been found to yield acceptable estimates in muscular physique athletes .
The Cunningham equation is as follows:
RMR = 22 * FFM + 500
You can use the calculator below to calculate your RMR using the Cunningham equation.
- Tinsley, Grant M., Austin J. Graybeal, and M. Lane Moore. "Resting metabolic rate in muscular physique athletes: validity of existing methods and development of new prediction equations." Applied Physiology, Nutrition, and Metabolism 44.4 (2019): 397-406.
- M. A. Clark, S. Lucett, R. J. Corn, et al. NASM essentials of personal fitness training. 4th ed. Lippincott Williams & Wilkins, 2011.