Losing Weight

Fat guy saw an advertisement, “Lose 5kg in a week”, he calls and says he would like to join.
Lady, “Ok, be ready tomorrow at 6am”
Next morning he opens the door and finds a hot babe with shoes, underpants and shirt saying, “If u catch me u can f*ck me” and the girl starts running. The guy starts running but couldn’t catch her. So during the whole week he tries to catch her but couldn’t and loses 5kg.
He then asks for the 10kg program. Next morning at 6am he opens the door and saw even a hotter babe in bikini saying “if u catch me u can f*ck me.” He loses 10kg that week. So he thought, this program is awesome!! Let’s try 25kg. But the lady asked the man if he was really sure as it was a tough one, the man said he was up for the challenge. Next day at 6am he opens the door expecting to see a nude babe. He finds a nude man saying, “If I catch u, I’ll f*ck u”, that week he lost 30kg.