Sleeping more as a way to lose weight


M Sivak, The University of Michigan, Transportation Research Institute, 2901 Baxter Road, Ann Arbor, MI 48109-2150, USA. E-mail:


Caloric consumption in a society with readily available food is likely to be approximately proportional to the number of hours of being awake. Thus, replacing 1 h of inactive wakefulness (e.g. watching TV), with sleeping is likely to result in a substantial reduction in caloric intake. Calculations are presented to illustrate the possible benefits of such a switch on weight reduction.