# Calorie deficit

A calorie deficit means eating less energy than you use, which leads to weight loss over time.

A moderate deficit, often around 500 kcal a day, is a common starting point. Higher protein and strength training help keep muscle while losing fat.

Related: [TDEE](https://revns.com/dictionary/tdee.md), [Protein](https://revns.com/dictionary/protein.md)

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