> Stricly speaking we don't.
Yes we do, because it works. Exercise burns more calories. Diet limits your calorie intake.
If you rebound into not doing exercise and overeating, that's on you.
> If you have any double blind study with more than a hundred subjects taken randomly from the general population (including "healthy" subjects), with a control group, spanning more than 3 years of observations I'd be dying to read it
> If you have any double blind study with more than a hundred subjects taken randomly from the general population (including "healthy" subjects), with a control group, spanning more than 3 years of observations I'd be dying to read it