View Single Post
Nov12-12, 04:53 PM
P: 4
Quote Quote by sophiecentaur View Post
Your calculation tells you that you are doing 1.6kcal of equivalent useful work. Meanwhile, your body is consuming loads more energy in just performing that exercise - around four times as much.
Look at this link for some representative values of work done and food consumed. It requires an awful lot of mechanical work to burn off a few pies!
Still, the range I usually see mentioned is around 220-250 "calories", so we're still off by a factor of ~40.