Celebrity contestants on Dancing On Ice often reveal how competing in the show helps them tone up and stay trim.
For Heather Mills, though, the rigorous training has had a profound impact.
The 42-year-old, who has suffered a number of injuries on the reality programme, has lost so much weight that her prosthetic leg no longer fits.
Speaking to the Sun, Heather revealed she has to try to maintain a constant weight so her leg stays in place, but that has proved difficult in recent weeks.
"Some days the leg is great and you can run and dance, then some days I have to stay in," she said.
"If you put on or lose five or six pounds and it swells up then it loses the grip…then you've got to leave the leg off for a few days and let it heal."
Heather hopes her new leg will help solve her problems – but just in case she has put together a special one-legged routine.
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