It's no secret that the Rock's dedication to fitness puts him on another level than most mortal men. However, the difference between you and him may not only extend to physical dimensions, but also the mental willingness to leave everything in the gym. And we mean "everything" because, as a recent Instagram post reveals, the Rock isn't afraid to pee in a water bottle at the gym when nature calls.

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The clip was ostensibly posted to announce the newest collaboration between the Rock and his apparel partner, Under Armour. In April, they released the UA x Project Rock line, which included a pair of sold-out sneakers and other fitness gear. The next capsule, known as USDNA, will be released in November on Veteran's Day. In July, the Rock posted an Instagram teasing a pair of sneakers that will drop on that date.

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(Broaden your shoulders and chisel your chest with the Men's Health Ultimate Upper Body training guide, a 12-week program dedicated to sculpting the muscles that will get you noticed.)

That information is peripheral noise compared to the video's more salient revelation, though. We repeat: The Rock pees in a damn water bottle at the gym. As he's showing off the "Desert Sand" colorway for his upcoming sneakers, the Rock also shows off a Voss water bottle filled with what appears to be urine. Just moments later, he confirms that it is indeed urine.

"You just saw my big bottle of pee," he says, laughing, "Look, I go hardcore when I train. I don't have time to go to the bathroom. I find a bottle, I pee in it, and I keep training like a beast."

Behind the Scenes with The Rock:

It's worth pointing out that the Rock appears to be in a completely private gym, so we have to wonder if he'd be so brazen in a more public setting. And we certainly wouldn't recommend that you do so. Nevertheless, the next time you go to the bathroom at the gym, just remember that the Rock is making gains while you're spending all that time walking to and from the urinal.

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