Metabolism Guide: How to Calculate BMR, RMR and Boost Energy

Metabolism determines how many calories your body burns at rest through BMR and RMR. Understand how age, thyroxine, and pregnancy affect your metabolic speed and energy levels.

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Do Vitamins Speed Up Metabolism?

The term "metabolism" refers to the chemical reactions that take place in your body each day, and the energy -- in the form of calories -- that's burned carrying out those reactions.

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Symptoms of a Slow Metabolism

If you struggle to lose every ounce -- and seem to gain it all back by simply looking at a cheeseburger -- you know the power of a slow metabolism. Your metabolic rate depends on a few factors within your control, such as your activity level, but factors outside your control can play a role, too.

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Can Any Supplements Slow Down Metabolism?

If you're naturally thin, chances are you have a high metabolism. And while your metabolism makes it easy to avoid packing on excess pounds, it can actually get in the way of your results if you're trying to gain weight.

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