Very interesting, but it again raises the question of how do you define "normal" and how do you define "abnormal".

And if the "normal" of 2008 is the same as the "normal" of 2012?

Is exercise beneficial because you have learned to tailor it better to your abilities, or because your endurance level has increased?

And this takes us back to the question of what is remission.

But, in reality it doesn't matter that much, because if a patient feels better it doesn't really matter why.

It only becomes a problem if the patient feels worse and the physician thinks he/she is better.

Or if both physician and patient are in denial of a serious illness.