Mr. Glassman, CrossFit’s founder, does not discount his regimen’s risks, even to those who are in shape and take the time to warm up their bodies before a session.

“It can kill you,” he said. “I’ve always been completely honest about that.”

But CrossFitters revel in the challenge. A common axiom among practitioners is “I met Pukey,” meaning they worked out so hard they vomited. Some even own T-shirts emblazoned with a clown, Pukey. CrossFit’s other mascot is Uncle Rhabdo, another clown, whose kidneys have spilled onto the floor presumably due to rhabdomyolysis.

(via CrossFit: Getting Fit, Even if It Kills You | Technoccult)