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Everything that happens in your body is fuelled by a constant turnover of energy.

To measure how much energy is consumed each day, we group the major activities together to give us the closest estimate possible.

Total Daily Energy Expenditure, or TDEE, is the total energy expenditure used per day.

Basal Metabolic Rate, or BMR, is the amount of energy needed to keep you alive such as breathing, heartbeat, cell production, nutrient processing and protein synthesis.

BMR accounts for approximately 60% of your overall energy expenditure each day making it the biggest contributor. If you were in a coma, then your energy expenditure would be completely BMR.

While BMR can be reliably calculated, it can still be affected by nutrition interventions. Extreme dieting will naturally reduce BMR as a protective adaptation by the body to ensure survival.

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