Increased dietary intake to compensate for changes in hunger hormones, inflammation, loss of energy, and insufficient physical activity induced by fatigue are all possible reasons for gaining weight due to lack of sleep. Individuals who don't get enough sleep are more likely to eat low-nutrient, high-fat, and high-sugar meals and consume more calories each day compared to individuals who get adequate sleep each night. Compared to well-rested people, sleep deprivation has been linked to a substantially higher percentage of body fat.