'I'm a big boy and I like it': Dax Shepard bulks up using 'heavy testosterone injections'

Dax Shepard is getting ripped.

The 46-year-old actor revealed on the latest episode of his Armchair Expert podcast with guests Ashton Kutcher and Mila Kunis that he’s gained 24 pounds of muscle during quarantine using "heavy testosterone injections."

"Can I comment on the size of your biceps right now, Dax?" Kutcher pointed out during their discussion about cryptocurrency. "You're getting Joe Rogan arms in there. It's phenomenal! I mean, you look like He-Man right now."

Shepard said he's "gained about 24 pounds" by working out "six days a week, lifting heavy (weights), protein shakes, going bananas, (and) heavy testosterone injections." The actor said he previously weighed "185 and now I'm 210."

He added, "I spent my whole life as a medium boy, and now I'm a big boy and I like it."

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Kutcher and Kunis both expressed concern over his use of hormone injections. "I told you that you got to be careful with these testosterone injections," Kutcher said.

According to Mayo Clinic, testosterone helps maintain men's muscle strength and mass, but it can lead to a number of side effects, including stimulating noncancerous growth of the prostate and increased risk of forming a blood clot.

Shepard assured his friends that he's "fine" because he's only using the injections to take himself to his "28-year-old testosterone level," noting that low testosterone runs in his family.

The actor added that the mental effects of testosterone outweigh the physical.

"Forget the body; mentally I love it because it makes me far more on fire to be alive," he said of the injections. "I was depressed after (the 2017 film) 'CHIPS.' I was literally retiring, that was the plan. I'm out. Started taking testosterone… All of a sudden I was on fire to work. I was like, 'I like this version.' This is the version I enjoy."

Kunis replied, "I like happy Dax."

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Shepard said he's always wanted to bulk up, but was waiting for a job opportunity in the Marvel Cinematic Universe to make him follow through with it.

"In quarantine I said to (wife) Kristen (Bell), I've been waiting for 10 years for Marvel to call so that I'd have an excuse to get huge," he said. "And they're not gonna call. That ship sailed. I'm 46, they're not gonna call. So I just have to do it for my own amusement."

This article originally appeared on USA TODAY: Dax Shepard bulks up using 'heavy testosterone injections'