IF you want to be fit you have to keep doing exercise forever, it has emerged.

Healthy eating and sport have been condemned as a scam after it was revealed that they only lead to more healthy eating and more sport.

Carolyn Ryan of Cardiff said: “After two months of going to the gym I asked my personal trainer when I’d be fit enough to stop all this and eat the fuck out of some pies.

“The look on her face. She said that if I relaxed my diet regime even for a week then the fat would pile on again even faster than before, and if anything I should be stepping it up.

“I thought it’d be like A-levels where once you’ve passed you never think about history ever again, but it’s more like revising history five nights a week for the rest of your life.

“She says after a while I won’t even want a Toblerone any more. That made me cry.”

Personal trainer Donna Sheridan said: “Getting healthy isn’t a sprint, it’s an endless marathon through featureless terrain pretending that chips and sitting around watching telly don’t exist.

“However I do have the warm glow of knowing that I’m better than everyone else.

“Unless they’re right and I’m the moron. Which I occasionally think, but I get that out of my system with a nice eight-mile run.”