Whoever said acting isn't like being soldier, didn't tell that to Jake Gyllenhaal -- who was sent to the emergency room after he got too far into character.
Jake was reportedly filming a scene for Nightcrawler on Wednesday when, according to an insider, "his character was looking into a mirror...and [he] punched the mirror in anger and broke it, cutting himself so bad he had to be taken to a hospital."
Another source insists the reason for the incident was nothing more than an actor being in character. "The scene was emotionally charged and...he got so into it... It was all the scene and not because he was mad about anything else."
After getting a few stitches, Jake returned to set later that day.