Jake Gyllenhaal was tased while doing research for his latest movie.

The 31-year-old actor stars in thriller End of Watch, which tells the story of two Los Angeles police offers who attempt to take down a drug cartel and Jake revealed he got caught on the wrong end of a taser weapon and was hit with "thousands of volts of electricity" while preparing for the role.

"It was not pleasant. Thousands of volts of electricity through your body in a very short period of time was not fun. But ultimately, I can talk about it!" he told Us Weekly.

Jake also revealed going on patrol with real life police officers, during which they attended a murder scene, also made him question his choice of profession: "I had no idea what to expect. The guys I was with... are so seasoned and so professional. We went to a call where someone had been shot -- it was a murder. This was a moment where I think you see the absurdity of your own job in light of the situation that you're seeing. I thought to myself, 'What am I doing here, why am I here?' Then I understood we're trying to make a movie that's authentic. It was no joke to any of us, and that made it no joke to me."