ABC News – You may think rest is rest whenever you get it, but researchers recently discovered that when at rest, people burn 10 percent more calories in the late afternoon and early evening compared to the early morning hours. Resting energy use accounts for 60%-70% of all calories burned each day to support basic bodily functions. it is a major determinant of changes in weight. Related Content: Chewing gum while walking may help you burn more calories, study finds Doing the same thing at one time of day burns more calories than doing the same thing at a different time of day, which could help explain why irregular schedules with eating and sleeping may make people more likely to gain weight. Your internal clock and your metabolism need time to readjust after changes, so keeping a similar routine may be a good way to influence how much energy our bodies burn or store as fat.