[geoka9]

> This is totally wrong. The body can also slow down your metabolism, twitch less, think slower (if you had read the article you'd see this is addressed), decrease the effectiveness of your organs

But all of those factors are included under "body uses less energy", no?

UPDATE: But I do understand what you're saying. Exercise can lower your BMR as the body tries to conserve energy. If that reduction is not met by a reduction in calories consumed, it stands to reason that you can actually gain weight after starting exercising. So gotta watch out for those lethargic days after lots of exercise.

> not to mention "eat" some of your nonfat muscle mass.

From my unscientific experience, for most people that should be accompanied by reduction in fat, too.