Matt Damon finds it a lot harder to stay in shape as he gets older

The 44-year-old actor, who is currently shooting the upcoming fifth installment of the 'Bourne' films, was forced to give up some of his favourite indulgences, including "burgers and beer," to get ripped for his return to the franchise and admits he wouldn't do it if he wasn't being paid.

He said: "It's a lot of work. You know what somebody said to me? They said, 'It's a lot of no's and not one yes.'