http://www.space.com/businesstechnology/technology/body_power_011128-1.html The Body's Energy For Work On and Off Earth By Erik Baard Special to SPACE.com posted: 07:00 am ET 28 November 2001 Covert military operations and space shuttle missions are both burdened by the fact that they rely on an inefficient, energy-wasting machine: the human body. Considering one of the biggest logistical problems planners face is getting power to equipment in remote places like Afghanistan or the moon, researchers are devoting their efforts to cut some of those losses through "energy harvesting" from the human body. ] Long article, so I won't post the rest.