"I have not once, and I am not exaggerating once seen a person who logically should be fit as they ate healthily and exercised an adequate amount and was still

"I have not once, and I am not exaggerating once seen a person who logically should be fit as they ate healthily and exercised an adequate amount and was still obese, ever." Well, sure. That's what "ate healthily" means, and it's how you determine that they're doing everything right: they're not obese. I'm not suggesting that there's anything involved but intake and exercise; I'm responding to the idea that you can eat as much as possible and just burn it off with a little extra exercise. That's totally not doable.