Kevin Hart is hilarious, but his workout regimen is no joke.

"As my career started to grow, my schedule grew relentless. I was putting a toll on my body," he says in the above video, posted by Nike, during which he discusses his dedication to fitness and healthy eating.

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"What I am is driven," he said.

He posted a few videos recently on his public Facebook page. Watch him work ..

And if you thought that was impressive - check this out! Crazy!