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Sleep loss reduce fat loss 50% and muscle gain -2x
Sleep deprivation can lead to significant reductions in fat loss, muscle growth, and strength development, with effects of over 50% observed in various studies. In one study, participants with only five and a half hours of sleep lost half the amount of fat and experienced double the muscle loss compared to those with seven and a half hours of sleep. The impact of sleep on body composition during a fat loss diet is substantial, comparable to other crucial factors like high protein intake and resistance training. The negative effects of sleep deprivation are heightened in combination with stress, leading to decreased sleep quality and heightened stress response.