Which is the Energy Source for Training?

I often get asked about fat burning, especially during exercise routines. Many people seem to want to know how to burn the maximum amount of fat during exercise.

The body is actually always using all three energy sources. The type of activity simply shifts which is the major fuel. In fact, intense training like resistance training uses as much as 20% of calories from protein, as branched chain amino acids become a major source.

When you are primarily burning fat, you rarely burn more than about 60% - 70% of the calories in optimal conditions ... the rest are a combination of carbohydrates and proteins.

The best way to burn as much fat as possible during exercise is to make sure you're not too much out of breath when training. I would say that ideally, you'll want to be breathing slightly harder, but certainly not gasping. A good guide is to always remain in a state where you'll be able to maintain small conversations with other people around.

Learn more about exercise fuel here!

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Jogging exercise energy usage, is it too much?

Which energy is my body using when I exercise?

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