Lizzy Yarnold, who trained at the University of Bath, has announced her retirement from skeleton. She made the announcement having had back surgery in the summer.
She won gold at Sochi 2014 and the Pyeongchang Winter Olympics earlier this year.
"I do want to stay involved in skeleton," she says. "It's given me so much and I want to give back to the sport as well."
As well as the back surgery, she also suffered from a knee condition during her career, as well as a condition that affects the inner ear and brain, and leads to spells of dizziness.
But Yarnold said skeleton was not the reason for her back operation, and that the sport had given her "more positives than negatives".
The 29-year-old said she was "ready for a new chapter" and "would like to put a few more things on my CV".