The trouble is, you can burn a significant amount of energy by physical effort only if you're in a great shape to begin with; otherwise, you can exert yourself for hours and still burn what amounts to (literally) just three or four bites of food.
Why does exercising when unfit burn fewer calories? Is it because you cannot exercise as intensely?
sfb:
Why does exercising when unfit burn fewer calories? Is it because you cannot exercise as intensely?
Pretty much, both when it comes to the maximum power you can exert and the time you can sustain it. To take a very extreme example, Michael Phelps can exercise intensely enough to burn almost 10,000 calories in a few hours every day (of course, there's a large genetic component to it). An average couch potato would likely collapse before managing to burn the equivalent of a single Starbucks muffin in a stretch.
There's been a recent heavily upvoted and profusely commented post about things people want to learn. It's close to having so many comments in a single day that it should probably have a part 2.
However, the subject seems to inspire thoughts about what *other* people ought to know, and while that's got a good bit of overlap, it's emotionally rather different.
So, what do you think other people ought to know? Any theories about why they haven't learned it already? Any experience with getting someone else to learn something when it started out as your project rather than theirs, especially if the other person was an adult?