It is, but it's 'only' half a pound a week
I would
not want to gain as much weight as that girl, but it's pretty easy to gain 2 or 3lbs in a month if you consistently overeat, just by a little
Most of us would gain a few pounds, even a stone or so, and then put the brakes on by cutting back - these people are in total denial
They had both lost weight by the end of the programme, hadn't they, but not as much as I would have expected, given how big they were and that they had 3 months to do it in - I hope they kept it up, but I suspect that once the cameras left they would be back in denial again