It's been going on for more than 15 years. Two Columbians are competing among more than 7,000 other transplant recipients this weekend.
Eric Sherron wasn't sure why he was losing energy, or why there always seemed to be a bad taste in his mouth.
He soon found out he needed a new kidney, but the life saving surgery didn't slow him down. He got a kidney from his mother.
"Even before the surgery, a year and two months ago, I was still trying to keep myself in shape and exercising," explained Sherron. "It got a little bit hard, I had some diminished exercise tolerance."
It was during his dialysis treatments when he decided to become a Transplant Olympian. Sherron got involved in the Transplant Olympics to create awareness.
Since Sherron had always been athletic, competing in the games seemed like a natural step. Once he committed to the games, his already rigorous workouts took on new focus.
Sherron competes in the 100 and 200 meter dashes. He also swims in the 50 meter breaststroke and 50 meter freestyle.
"It's been good to get back in the pool and really try to improve my fitness in that area and get stronger and faster and everything there," said Sherron.
"I want to be able to motivate other people to becoming donors and signing their cards, and discussing their wishes with their families," he said.
Besides taking a handful of pills and some occasional blood work, Sherron's life is back to normal with a greater appreciation for organ donation.
The Transplant Olympics are occurring in Louisville, Kentucky.