Interested in the calorie burn during sleep? Wondering, ‘how many calories do you burn sleeping? While it varies based on factors like weight and metabolism, the average person burns around 0.42 calories per pound, per hour of sleep. For instance, a 150-pound person might burn approximately 63 calories in an hour of slumber. However, it’s important to remember that sleep quality is crucial for overall health, rather than focusing solely on calorie expenditure.