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Glossary · Nutrition

What is Thermic Effect of Food (TEF)?

The calories your body uses to digest and process the food you eat.

In context

Thermic Effect of Food (TEF) is a key concept in nutrition. The calories your body uses to digest and process the food you eat. Knowing what it means — and how it connects to the rest of your training — turns it from jargon into something you can actually use in the gym.

Nishaana is built around ideas like this: it tracks the numbers behind them automatically, so the theory shows up as real progress in your logbook rather than staying abstract.

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Related nutrition terms

Common questions.

What does thermic effect of food (tef) mean?

The calories your body uses to digest and process the food you eat.

What category does thermic effect of food (tef) belong to?

Thermic Effect of Food (TEF) is a term from nutrition in strength and fitness training. Browse more nutrition terms in the Nishaana glossary.

Why does thermic effect of food (tef) matter for training?

Understanding thermic effect of food (tef) helps you train and program more deliberately — it is one of the ideas that separates guessing from a real, repeatable system.

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