By Charlie Hunnam has said that finishing Sons of Anarchy will be "difficult".
The actor, who plays Jax Teller on the FX drama, explained to Men's Health that the character takes up his "every waking thought".
"It's going to be very difficult to finish Sons," he said. "Everybody has a part of their identity dictated by their work, but for an actor, it's even more so.
"I've spent a long time trying to bring this guy to life. It takes up my every waking thought.
"And then, as absorbing as that is, it just ends abruptly. You finish, and it's done."
Hunnam also discussed keeping in shape for the show, sharing that he is required to be a certain physique to convincingly portray Jax.
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"I can't take my shirt off and just be skinny," he said. "When you see a guy beating up people and being a general badass, you assume he's going to look pretty formidable.
"Staying in shape for Jax requires me to be 5 to 10 pounds heavier than I would be naturally."
Hunnam continued: "I get more out of fitness mentally than I do physically. It's like an oil change. Your body is mostly water and it gets dirty, you know?
"You have to clear the dirty water. Otherwise, it'll corrupt everything - your thoughts, emotional process and body.
"I get addicted to the endorphin release of working out - my whole physiology relies on that. If I get injured or I don't have time, I'll start to feel cloudy then depressed."
The full interview appears in the December issue of Men's Health, on sale now. Also available as a digital edition.
