Colin Farrell says physical preparation for 'Total Recall' was extremely challenging.
The 'Phone Booth' actor has divulged that the most difficult part of shooting Les Wiseman's action movie remake was the intense physical training he undertook to get fit.
The 36-year-old star told Collider.com: ''The biggest part of the preparation for me was physical. We had four months before we started shooting so I went to the gym every day.
''I started shooting and did ridiculous things like I went to the gym after a 15 hour set. That was the hardest thing, it was staying in shape.
''I got really fit before the film and I knew it was going to be a tough shoot and I spent six months running, jumping, shooting, falling, being hit, hitting, screaming, shouting!''
The Hollywood hunk also confessed he hated watching himself on the big screen, but claims the film was so exciting that he is looking forward to watching the finished product.
Colin explained: ''I haven't seen it, but I saw a rough cut of it about five months ago and even what I saw, I thought it was entertaining.
''There's enough in this film on the screen for my presence not to detract from the experience as it usually does.
''What Len really wanted was to make a film that - as much as first and foremost it's an action film - has enough of an emotional and dramatic heft that it can keep the audience engaged.''
'Total Recall' also stars Kate Beckinsale and Jessica Biel.