Why Sleep and Weight Are So Closely Connected

Sleep and weight influence each other in a loop most people don't notice until they're in it.

• Short sleep disrupts the hormones that regulate hunger, making high-calorie food harder to resist the next day.
• Tiredness also drains the willpower and energy you'd use for cooking and exercise.
• Late-night eating, common when you're up late, adds calories when your body needs them least.
• On the flip side, regular daytime activity and reasonable meal timing tend to improve sleep quality.

Breaking the loop starts with the sleep side: a consistent bedtime, a wind-down routine without screens, and a cool, dark room. Small improvements in sleep often make everything else easier.