"Will Skiing": Schwarzenegger adjusts his age of training

Even Hollywood star Arnold Schwarzenegger (71) feels the age. "I can not do squats or perform such heavy-leg exercises," he told the American magazine "Men's Health." "My knees are affected, I have to protect my knees because I want to ski."

He loves to ride a bike all over the world. "When I travel, I also bike because it is a good exercise for the legs and you live a city in a different way."

With modern fitness equipment, a workout is possible, said the Austrian. "The machines available today are really incredible," said Schwarzenegger. "A guy like me who has had surgery on his shoulder, hip and knee – he can still find an exercise that he can do despite his injury."