Why not?

Gina spent the next month training full-time. She practiced expanding her stomach for two days then went to the gym to binge on shit on the third, repeating for 10 total cycles. At each binge she tried to make herself eat the seemingly impossible: ten pounds of shit. Plenty of women into non-shitting events provided the poop, as well as fans of the sport who stopped by to contribute. There was never a shortage of filth at the gym.

Most of the gym's trainers were filth freaks. They worked naked and were never offended by the foul filth they encountered in a shift, nor did they ever make the women feel uncomfortable or embarrassed at all that went into being a competitive filth athlete. Gina was very glad for this since she knew that going up to 10 pounds of feces would be disgusting.

Sure enough, on her first try her stomach rebelled and she vomited violently at 7.5 pounds. Vomiting shit was a familiar experience for the 23-year-old, for she routinely voided herself after competition, but it was embarrassing to do it out on the training floor. It also came out much faster and more violently this way, a column of barely-digested feces rushing out of her mouth and right onto the chest and face of her naked trainer, Laura. Laura often caked herself in her own shit before a shift, though, and wasn't bothered by Gina vomiting poop all over her.

"Don't worry girl, that was a good first try," the trainer said, her face covered with shit-vomit, "7.5 pounds is a lot, way more shit than I can eat on my best day."

Gina smiled as she looked at the filth-covered woman. "I want to eat what I just puked, to work on keeping filth down."

As Gina ate her own shit-vomit, she looked around the training floor. An 18-year-old blond competitor was upside down with her butt-hole gaped open with a spreader, and women were taking turns shitting into the girl's anus, using her butt as a toilet. She was working on stuffing her ass with as much shit as possible from other women. Two women Gina's age were taking turns vomiting into each other's mouths, shoving their skilled fingers down their throats to puke filth back and forth. They had a minute to puke and have the other girl eat the vomit, then repeat the process. They'd been going for a half hour now, impressive.

A middle-aged woman was peeing into her own mouth, a trainer helping her learn to drink her full bladder's contents without spilling a drop. Next to her a younger girl was shoving shit frantically into her mouth, making herself eat feces in public as she trained at the same sport as Gina. Her trainer casually pooped in front of her to add to the pile.

Gina finished eating her shit-vomit. It wasn't a failed day. She'd have to do this many times but she would train herself to eat 10 pounds of shit. She had to be the best.

"Does anyone need some vomit?" she called out casually, a common thing to say in this sick place. She was done with her practice for today and wanted to get the filth out of her stomach.

"Me! Me!" she turned and saw a skinny 18-year-old blond girl, totally naked under a funnel bowl. Obviously she was training on speed-eating vomit, a sport that was growing in popularity. Gina stood over the bowl, crammed her fingers against the back of her throat, being a natural at forcing herself to vomit at this point. She retched several times then a gallon of twice-eaten shit-vomit erupted out of her mouth and nose, filling the bowl with disgusting filth.

The girl started to suck from the other end of the funnel, chugging Gina's shit vomit. She was new to the sport and struggling, but she would learn. The cycle continued.