Jake Gyllenhaaldid not walk away from filming his newRoad Housemovie unscathed.

There, he spends most of his time engaged in violent, bloody, bare-knuckle brawls.

And, it turns out, some of that blood wasn’t fake.

Jake Gyllenhaal attends the UK special screening of “Road House” at The Curzon Mayfair on March 14, 2024 in London, England.

Jeff Spicer/WireImage

“I felt the glass going in my hand,” he said.

“I remember the feeling [and] went, ‘Thats a lot of glass.'”

“My whole arm swelled up.

It ended up being staph.”

Want more movie news?