Many variables that go into the
calorie-burning equation, such as age, sex, weight, metabolism,
diet, and physical and nonphysical daily habits. The two most
important factors in determining how many calories you burn while
sleeping are weight and number of hours slept. On average, a
person burns between 0.4 and 0.5 calories per pound, per hour. For
example, a 100 lb. person burns 40-50 calories per hour. In eight
hours of sleep, this person will burn approximately 360 calories.
A pound of muscle burns fifty calories a day on average and a
pound of fat burns nine calories. A leaner, more muscular person
is going to burn up to five times more calories per pound.
If you weigh 160 pounds, you burn 69 calories per hour while
sleeping, the FitWatch website calculates up to 552 calories
burned during eight hours of sleep. A 120-pound person burns about
51 calories per hour sleeping, or 408 for eight hours; a 200-pound
person burns 86 calories per hour, or 868 for eight hours of
sleep.
Fifteen minutes of laughter a day will burn ten to forty calories,
depending on a person’s weight and the intensity of the laughter.
A study by Loma Linda University found that laughing raises the
levels of immunoglobulins, which ward of disease, by fourteen
percent. Laughter also has other benefits, including increased
pain tolerance, relief of emotional stress and a workout for the
muscles of the diaphragm, abdomen, back, and shoulders.