Apr 4, 2013
Why do you weigh more at night than in the morning?
During sleep, your body processes food and drinks from the day before. Everything you consume is broken down and eliminated through respiration, perspiration or urination. Up to 80 percent of nighttime weight loss is from water, not including urine or feces. Exercising during the day and lowering your body mass index, or BMI, also promote weight loss because they increase short-wave sleep, which increases the calories you burn while sleeping.