Deadpool” gave Ryan Reynolds a nervous breakdown.

“I felt like I was on some schooner in the middle of a white squall the whole time [promoting the movie]. It just never stopped,” Reynolds, 40, said in GQ’s December issue. “When it finally ended, I had a little bit of a nervous breakdown. I literally had the shakes. I went to go see a doctor because I felt like I was suffering from a neurological problem or something. And every doctor I saw said, ‘You have anxiety.'”

Reynolds explained that the pressure for the movie to perform well triggered his anxiety.

“I say this with the caveat that I completely recognize the ridiculously fortunate position that I am in,” he said. “But the attention is hard on your nervous system — that might be why I live out in the woods. And I was banging the loudest drum for ‘Deadpool.’ I wasn’t just trying to open it; I was trying to make a cultural phenomenon.”

Thankfully, he and the 2016 movie succeeded — and now the father of two (and husband to Blake Lively) is a generally happy guy.

“My baseline’s pretty good, I think, aside from a few pretty intense anxiety hiccups over my life … I’m also old enough to understand what’s an illusion and what’s real, and that it’s foolish to try to think that I can control anything from here on out,” he said.

Still, don’t be fooled by how Zen that sounds.

“Undercut the Zen part with the same fears that everyone else has,” Reynolds said. “But I wasn’t a miserable f—k before I did this for a living, and I would hope that I would never turn into one, because I’m lucky.”

This article originally appeared in the New York Post's Page Six.