In reply to Shani:
> It is almost as if doing highly intense activity increases your appetite and undertaking sedentary activity leads to a reduced appetite....who'd have thunk it? Maybe this whole thing is a bit more complex than calories in/calories out?
Arrived late, but I see the idiots are out.
It's simple
if you burn more calories than you consume, you will lose weight. It's not biology, it's not chemistry, its basic basic physics that we all (should) learn when we're about 12 years old.
If you exercise more (e.g. you're a lumberjack) you burn more calories in a single day, therefore you naturally a hell of a lot more to avoid turning into a rake. Your body is more clever than you think it is (although, obviously not clever enough)
I've recently started commuting a total of 20 miles. Of course my appetite has increased, I now have second breakfast and a second lunch, but even so I have lost half a stone in a month.
That's not to say that diets don't work. Of course they do. Almost by definition, you're eating less. My personal take on it is that diets (whether backed by commercial companies or not) are for people who are unwilling or unable to exercise. That's fine, not everybody has the time, inclination, or physical ability to do exercise.
Personally, however, I love the fact that the side-effect of me riding 20 miles a day is that I can, practically guilt free, eat and drink whatever the hell I want, whenever the hell I want. Chocolate, ice-cream, cake, delicious cheese, vats of pasta, slabs of juicy steak, beer, wine, whisky etc. etc. And I still stay a lovely trim 11ish stone. Better than any bloody diet.