He’s 71-years-old now and the former body builder-turned-action hero admits he’s had to change his exercise regime.

‘Squatting and all those kind of like heavy leg exercises, I can’t do anymore,’ Arnold Schwarzenegger told Men’s Health in an interview published on Tuesday.

‘My knees are shot. I have to protect my knees because I want to go skiing.’

Looking strong: Arnold Shwarzenegger, 71, showed off his muscled chest in a tight T-shirt in London on November 5, but he admitted he’d stopped doing some exercises to ‘save my knees’

But that doesn’t mean The Terminator has given up lifting weights – he does it using updated gym technology.

‘The machines that you have today, I wish that I could have used them in addition to what I did, because they’re really amazing,’ he said.

Glory days: Arnold was in top form in 1976. But he told told Men’s Health in an interview published on Tuesday,  ‘Squatting and those kind of heavy leg exercises, I can’t do anymore’

Meanwhile, Arnold, who served as Governor of California from 2003 to 2011, had open heart surgery to replace an aging pulmonic valve in March.

He first had the valve fitted in 1997 and it had reached the end of its life, according to his representative Daniel Ketchell.

And it doesn’t seem to have slowed him down. He has become a huge fan of cycling. ‘I want to bicycle all over the world,’ he told Men’s Health.

New passion: The Terminator is a big fan of cycling, saying ‘I want to bicycle all over the world.’ Here Arnie’s seen leaving Gold’s Gym in Venice after a workout on July 14

‘When I go shopping or something, I go on the bicycle, because then you can exercise in the legs and you see the town in a totally different way.”’

The Conan The Barbarian actor has also launched a new line of protein powders and supplements with LA Lakers basketball star LeBron James, 33, Olympic Alpine skier Lindsey Vonn, 34, and supermodel-turned-celebrity Cindy Crawford, 52.

The company, called Ladder, personalizes the products to each person’s needs.

In it together: Arnie, LA Lakers star LeBron James, 33,  and celebrity Cindy Crawford, 52, met up at the game against the Portland Trail Blazers at the Staples Center on November 14. The trio, along with Alpine skier Lindsey Vonn, launched a new line of protein powders