RMR Test Tomorrow....What does that mean?

Apr 12, 2018

I have a RMR (Resting Metabolic Rate) test tomorrow. So I'm in the 24 hour window of no exercise, no medications, no vitamins, no alcohol, and no caffeine. After 8 PM it will be no food or liquids until my test is completed. Yea for me!!

What, if anything, does the RMR test tell you?