Brock Lesnar has admitted he was feeling the nerves on his UFC debut in February 2008.
The WWE legend faced off against Frank Mir at UFC 81 in Las Vegas.
However, the former college wrestler’s bow didn’t exactly go according to plan, as he lost the fight via first-round submission.
But he admits that he let the pressure get to him as he made the walk to the octagon for the first time.
During a recent appearance on The Pat McAfee Show, Lesnar said: “I still get butterflies. I still enjoy it. I enjoy the s*** out of it.
“It’s a different game entering the octagon and, I’m telling ya, you’ve gotta be half bat-s*** crazy! You do!
“I built, or had ordered, an octagon so I didn’t have the first jitters of getting in an octagon so I could fight in it and practice in it.
“But then you’re in front of 20,000 people and then they shut the door and it’s like, ‘Aaah, okay! Here we go!’”
Lesnar, 44, went on a 4-3 run in the UFC before retiring from MMA for a second time in 2017.
He still watches fights occasionally, but admits he struggles to keep up to date with everything going on.
Lesnar, who holds a blue belt in Brazilian jiu-jitsu under Rodrigo Medeiros, added: “Yeah. I don’t watch a lot of fighting anymore, because there’s so many guys, it’s hard to follow.
“I wish Dana [White] could figure out how to book things different.
“Like, come on, man, let’s start getting behind some of these guys, and maybe protect somebody for a while so that they can become a household name and you can ‘cha-ching’ them.
“But he’s in the business of putting super-fights every week. It’s tough to do. And it’s tough to stay on top.”
It has been reported that Lesnar, also known by his ring name The Beast Incarnate, will be defending his WWE Championship at Madison Square Garden on March 5.
His former manager Paul Heyman has also confirmed that his former charge will face Universal Champion Roman Reigns in a winner-takes-all match at Wrestlemania 38 a month later.