Congrats! You are scheduled for you Resting Metabolic Rate Assessment.

In order to get the most accurate results, please follow this protocol.
  • No exercise 24 hours before the test
  • No caffeine six or more hours before the test
  • Your last meal should be 5 hours before the test. Overnight fast works best.
  • No alcohol 12 hours before the test
  • Eat as usual the day before.  
Upon Arrival

The goal is to get you as relaxed as possible when you arrive. I recommend showing up 5-10 minutes early, so you have time to sit and relax. Avoid making phone calls or trying to multi-task before your appointment, as this can elevate your breathing frequency and impact the results.

How does a Resting Metabolic Rate Test work?

To perform an RMR test, you'll recline in a comfortable chair and breathe into a mask, connected by a hose to a metabolic analyzer. The amount of oxygen inhaled and carbon dioxide exhaled will be measured for 10-20 minutes. Your goal during the test is to get as relaxed as possible and breathe normally for the test duration.

What is the purpose?

An RMR test provides an accurate measurement of the number of calories your body consumes in a rested state and shows whether your metabolism is fast or slow. With this data, specific nutrition and exercise goals can be set,.  For some, it will be to increase metabolism, while others may use it to determine the right amount of calories for weight loss, maintenance, or weight gain.


After the test, we'll spend about 15 minutes reviewing a few key principles regarding nutrition strategies. You'll get the total caloric amount that your body needs per day. In addition, you'll find out what percentage of fat and carbs you burn at rest. I will also recommend some principles that will help shift your carb: fat percentages (if they could use shifting). This will depend on your goals. I will also answer any questions you may have.  

We are inside the Therex Recovery Lab located at 

19764 Yorba Linda Blvd, Yorba Linda, CA 92886