Vin Diesel is known for his bulging biceps and muscular physique and the actor told "The Tonight Show" host Jay Leno that it's all natural.
The subject of Diesel's muscles came up on Wednesday, May 22, after Leno began talking about Diesel's Men's Fitness cover and asked the actor if he had ever been tempted to try steroids. His appearance on the show can be seen below.
"I have never done any type of steroid. The only thing I've ever done is protein powder," the 45-year-old actor said. "I'm lucky that I have never felt the urge or felt like I had to do steroids and now, as an actor, I'm not even thinking about being a body builder."
Later on in the program, Diesel told Leno that he brought his kids to the studio and asked the host and the audience if they wanted to meet his children. Diesel then brought out his daughter and 2-year-old son on the stage. His longtime girlfriend, Paloma Jimenez, briefly appeared with the children.
Diesel then took his children to the couch and continued to promote "Fast & Furious 6," which hit theaters on Friday, May 24. The first five films in the action franchise have made more than $1.59 billion in total worldwide. A seventh film is also in the works.
Check out video of Diesel's appearance on "The Tonight Show" below. (Warning: Video contains explicit language.)