"We've always wanted to do better than each other," says Welsh boxer Garan Croft as he turns to his training partner.
Garan is older than his training partner – one minute older in fact.
For his training partner is identical twin brother Ioan and the 24-year-olds are pushing each other to achieve success.
"Whether we're running, on one of the ******* ault bikes or the vertical climb – we want to beat each other," Garan adds.
"We've got to be separated in sparring sometimes.