Debbie McGee has felt "physically washed out" this week ahead of the "Strictly Come Dancing" final.
The 59-year-old star will go up against Joe McFadden, Alexandra Burke and Gemma Atkinson in a bid to win the Glitterball Trophy in this weekend's finale, but she has been struggling and bosses are said to be hoping she will be fit for the showpiece.
She said: "On Tuesday I was like a zombie. I was brain dead and physically washed out."
Debbie - who has been struggling with injuries throughout the series - has admitted this week has taken more out of her than any other time, and she is feeling the pressure.
She is quoted by the Daily Star newspaper as saying: "I am now more tired than I have been in any other week. The pressure is much heavier."
Debbie - who is paired up with pro partner Giovanni Pernice - battled through a twisted back muscle to perform earlier in the series, and previously revealed she had been visiting a physiotherapist in a bid to ease the pain of her multiple injuries.
She said: "The samba really pulled the muscles over my hip bones. It actually felt like a tendon had gone over my hip bone, and when I put my weight on my left foot it kept giving way and my leg was buckling.
"I had more physio after Saturday. They gave me ice packs. I had to go back to the hotel and soak in a bath and put an ice pack on.
"I have got a few bruises."
Despite her injury problems, Debbie - who was married to late magician Paul Daniels - is 2/1 second favourite with bookmaker William Hill to take home the Glitterball Trophy this weekend behind Joe McFadden at 4/6.
But Debbie's odds were cut this week after punters gambled on her winning the series.
Alexandra Burke (6/1) and Gemma Atkinson (14/1) are third and fourth favourites.