Celebrity fitness tips

Heidi Klum

A supermodel and supermum, Heidi Klum is nothing if not dedicated.

Only a month after giving birth she was back working out with celebrity trainer David Kirsch, who advocates workouts combining strength training and aerobics. She is also said to love his protein shakes.

Jessica Biel

Jess likes to stay in shape and isn't afraid to sweat to get the look she wants.

Jason Walsh, her personal trainer, recently revealed to People Magazine that he makes her do plyometrics (things like stair jumping to you and me).

'These hurt,' says Walsh. 'Even athletes hate them. After Jessica did these the first time, she would've punched me if she had the energy.'

Crikey!

Sarah Jessica Parker

Sex and the City star Sarah Jessica Parker has a very strong look to her body thanks to an exercise regime that includes running, climbing stairs and yoga.

She also lifts weights, dabbles in karate, swims lengths, cycles, and occasionally does a spot of horse-riding. We're exhausted just reading about it!

Cindy Crawford

The ever-youthful Cindy C revealed to The Guardian: 'I've worked out since I started modelling. I always had to workout to stay in shape so for me it's just part of my lifestyle and who I am.

'Nowadays I'm into hiking and I workout in the gym and running around after two kids also helps.

'The important thing is to keep changing it up so you don't get bored so that you'll actually do it, because in the end it's just about finding something you'll do.'

Katie Holmes

Mrs Tom Cruise's exercise regime was devised by her husband and the combination of Katie's marathon training (she ran the NY marathon last year), and gym workouts with a personal trainer, helped her regain her leading lady figure after giving birth to Suri.

Elle Macpherson

'The Body' describes herself as 'a physical being' who does sport pretty much every day.

Speaking to The Daily Telegraph, she said: 'If I fly to America, and my body clock is out of sync, then I'll probably get up at 5am, meditate, then swim or run. It depends on where I am and how much time I have.'

However, she is careful to add that: 'exercise isn't an obsession.'

Gwyneth Paltrow

The secret to Gwyneth's slender frame has been revealed: she exercises for 180 minutes a day!

Chef Mario Batali, who teamed up with the actress while making the documentary Spain...On The Road Again, revealed to US magazine: 'I think she works out three hours a day - which is one of the keys to success.'

Jennifer Lopez

The famously curvy singer/actress/designer is said to be training furiously for a triathlon, just eight months after giving birth to twins.

Her husband Marc Anthony told TV show Extra: 'Jennifer is training for a triathlon in October. I'm very supportive. I'll be encouraging her.'

That's true love.

Halle Berry

The 41-year-old actress, who welcomed daughter Nahla Ariela into the world in March, has hit the gym to lose her pregnancy pounds.

A source close to the actress said: 'She has been doing intense 30-minute workouts, five days a week, spending 10 minutes each on the treadmill, step machine and cross trainer, followed by some squats.'

Lucy Liu

The Charlie's Angels star has revealed she isn't a big fan of gyms, because she has to share the air.

Liu says: 'I prefer to do everything outdoors. I don't belong to a gym, because I don't like the recycled air. I love LA, it's awesome. You can go rock climbing, you can go hiking, you can go to the beach...'