It is a device which generates electricity from body movement while astronauts exercise. The energy in ISS is mainly powered by solar arrays and MEH offers an alternative energy source. Since every astronaut is obligated to exercise at least 2 hours a day, Muscle Energy Harvester could generate more or less 160 watts-hours in each average exercise. That is enough of energy powering 100 watt light bulb for 2 hours or large screen TV for 1 hours. It is a moderate amount compared to 8 solar arrays, but it is enough for personal use or emergency situations. MEH module could be implied for long distance missions to Mars or Lunar surface. A concept of collecting electricity while you exercise could also have psychological benefits to motive user to exercise.
