Why Lack of Sleep Makes You Gain Weight Even Without Eating More
Why Lack of Sleep Makes You Gain Weight Even Without Eating More Why Lack of Sleep Makes You Gain Weight Even Without Eating More Many people gain weight despite eating the same amount of food. The missing variable is often sleep. Sleep loss changes how your body processes energy, even when calorie intake stays constant. 1. Weight Gain Is Not Just About Calories Calories do not operate in isolation. Hormones, metabolism, and stress signals determine whether calories are burned or stored. 2. Sleep Is a Metabolic Regulator Sleep is when your body resets insulin sensitivity, fat-burning enzymes, and hormonal balance. Without enough sleep, these systems malfunction. 3. Sleep Loss Slows Resting Metabolism Even one night of poor sleep can reduce resting energy expenditure. You burn fewer calories doing the same activities. 4. Cortisol Rises When Sleep Is Short Lack of sleep elevates cortisol, a stress hormone that encourages fat storage, especially a...