The image for this one came out a little janky, my apologies.

"Like, I've become such a flabby mess. I can't stop eating. I mean just look at me - I'm a slob!" She pinched her belly 'fat' for demonstration, though to his eyes she found only tight skin over toned muscle.

"Hmgh," he grunted noncommittally, wary of feeding into her neuroses. He glanced at the contract. "And you'd like me to lose you another dress size?"

"Or two, if you think that's possible. I'll understand if you think I'm a lost cause." For the first time, she seemed to get out of her own head long enough to notice the man she was hiring. She frowned, nervously fingering the swap collar around her neck. "Aren't you a bit... big for a personal trainer?"

"That's how you know I'm one of the best," he replied with a smile. "My schedule is very full. I've barely been on my own shoulders in ten months and my clients have a tendency to treat my body like a rental. Hence the waistline. Shall we begin?"

Body dysmorphia was a terrible thing. Of his last seven swap collar clients, six had been beautiful, athletic women in their physical prime utterly convinced of their decrepitude. He did offer an exceptional swap trainer service and always strove to bring the client's body up to their exacting specifications within the limits of what was healthy.

But the thing he delivered that was far more important was a sense of perspective. After a month in his admittedly doughy body, they always returned happily to their own, reorientated to sane physical norms. Several clients had been fully in the throes of anorexia, worryingly underweight, and discovered, contrary to their requests, that their bodies had actually put on weight under his care but even they had given no complaint.

They seated themselves in the seats of the gym's automated recapitator. The metal pincer swung down from the ceiling, like something out of an arcade claw machine, and snagged his head. It gave a neat twist and his head parted from his neck at the seam of the collar, peeling him off his neck and swinging him over onto hers.