roflrofl... That shit is absolutely possible if you really pay attention to what he didnt say. You'll notice dude didnt say how much he weighed before going on the 2 week diet, just how much he weighed after the diet. He went 2 weeks on just 30g of carbs a day to purposely deplete his glycogen stores and dehydrate himself. During this time he was still lifting AND doing cardio. Thats what he said.
Lifting and cardio + 30g of carbs a day x 2wks = he just lost 20lbs
If you loose weight that quick its easy to get it back in a weeks time plus 5lbs of water weight. Instead of loosing weight for 2wks then gaining weight for 1wk he could have just eaten better for the 3wks he was doing that bull and he could easily have gained the same 5lbs he gained here but in actual muscle. He may have gained a pound or two more than he weighed any damn way but yea, its very possible lol

its like the reverse atkins effect.

Ok. Well it is actually possible to put on that much weight in a week. In the early days of my competing. It was not unheard of for someone to put on 10-12kg in a week after stepping off stage. Now you have to realize that all of this is fluid and a little fat as well. But it is possible but there would be NO MUSCLE gain.

It's totally possible! It would have only taken approximately 90,000 kcals in said week and the weight would have mostly been adipose, but thermodynamics like a motherfucker.

For the record, I'm being facetious; it's a crock of shit and people that perpetuate garbage like that should be imprisoned for a variety of reasons.

Its a crock even if you did gain that much weight in a week there is no way it would be quality lean mass just not gonna happen