Scots Judo champ Kimberley Renicks made the ultimate sacrifice to win Commonwealth Games glory - giving up Irn-Bru.
Her sister Louise, 31, said yesterday: "You have to be sensible with what you're putting in your body and Kimberley gave up Irn-Bru for six months."
Kimberley, 26, secured her country's first gold, beating India's Sushila Likmabam courtesy of an ippon in the under 48kg weight category.
Louise then overcame England's Kelly Edwards in a nervy under 52kg final to match her sister's medal.
She said: "You have to try and make sacrifices, if you're going out to socialise, if you go to weddings or birthday parties you can go, but you can't stay there till one o'clock, two o'clock in the morning. You have to go away at a reasonable time and go back to your bed."
Kimberley said they had been working hard since their selection two years ago.
She said before her match she felt a "wee bit sickly" but support staff were there to keep her focused.
Yesterda, Irn-Bru maker AG Barr said it was on track for another year of growth as it outperformed Britain's overall soft drinks market with a 5.6 per cent rise in first half revenue.
AG Barr head of marketing Adrian Troy said: "We are delighted to have Kimberley Renicks here at the Irn-Bru store to present her with her first ice cold bottle of Irn-Bru in what I'm sure will have been a long six months for her.
"It's thoroughly deserved and I am sure it will be a refreshing moment after the hard work she has put in on the build up to her gold medal win."