Mark Mastrov, Founder of California Fitness

Workout wear: 'California Fitness T-shirt, shorts and Nike shoes - to motivate me during my daily training.'

Suits: 'It has to be Armani, as they are cut very well [and suit] my body shape.'

Can't live without: 'My BlackBerry. I don't need a briefcase because everything is stored on this brilliant little gadget.'

Car: Range Rover.

Book: I am Jackie Chan: My Life in Action. 'I've always been a huge fan and getting to know him personally through the partnership with California Fitness, piqued my interest even further. He is truly an inspiration.'

Musical instrument: 'I love the piano but have to admit I am not that good at playing it.'

Shoes: Prada.