>>>Actually it's 80% diet, 20% exercise.
>>
>>depends how much exercise you get. I'd rather be able to eat relatively freely and exercise than eat lettuce all day.
>
>To lose weight you either need to reduce your calorie intake and/or burn up more calories then you consume. The average male consumes/needs 2500 calories per day.

Depends whom you ask. When my wife was studying, we found 1600, 1800 as guideline numbers, and 2500 was for miners. Now it seems to be for minors...

IOW, I think these standards aren't scientific per se. They're industrial.