Regular sleep restriction can affect the amount, composition, and distribution of your food intake, leading to a greater propensity to overeat. Tiredness caused by sleep deprivation enhances your chances of rewarding yourself with foods that are normally seen as treats, such as chocolate or crisps. Additionally, the increased fatigue and tiredness associated with sleeping too little could lessen your resolve to follow exercise regimens, and to increases energy and fat intakes, which may explain the associations observed between sleep and obesity.