When people reduce their calorie intake, adding resistance training results in more preservation of muscle and other fat-free tissue than reducing calories alone.
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Resistance training during caloric restriction preserves a greater amount of fat-free mass compared to caloric restriction without resistance training.
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When a person does resistance training while eating fewer calories, their muscles learn to use existing tissue more efficiently by activating more nerve signals to muscle fibers, which lets them generate more force without needing to grow bigger.
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