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The body's second source of energy, after carbohydrates, is fat. When carbohydrate stores are depleted, the body turns to fat for energy through a process called lipolysis, where stored fat is broken down into fatty acids and glycerol. This fat can then be used for energy, especially during prolonged exercise or periods of fasting. Additionally, proteins can serve as an energy source, but they are generally used only when carbohydrates and fats are insufficient.

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1mo ago

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