67-year-old Schwarzenegger hits the gym for Terminator

Arnold Schwarzenegger has been bulking up for 'Terminator Genisys'.

The 67-year-old actor is returning to play the cyborg assassin in the forthcoming fifth movie in the franchise and despite being in shape, he admits he wasn't as muscular as when he first played the role in 1984's 'The Terminator' so has been working hard to get back to his best and says his routine is the same now as it was then.