For many celebs, tattoos serve as a major creative outlet, and some get pretty innovative with their designs — case in point: this inked-up star.

Now, the tattoos run all down the abs, and this star’s using them to flaunt that physique — so, can you guess who it is?

David Dobrik‘s telling fans how to transform their bodies, just like him … and, he says walking on an incline’s all ya gotta do!

We caught up with the influencer at the Maybourne Beverly Hills hotel Tuesday night while he was leaving a Snapchat creator event … and, we had to ask him about his one big fitness tip with beach season just around the corner.

Dobrik says if there’s only one thing he could recommend … it would be for fans to use treadmills on an incline. Listen to the full clip to hear the exact gradient and speed that works for him.

ICYMI … Dobrik shocked fans back in January when he posted a shirtless selfie — revealing a totally shredded torso underneath.

He did say he cut out junk food and sugary drinks too … so, a treadmill alone isn’t gonna cut it for fans — diet’s part of it, too!

He posed in his underwear for a Hugo Boss photo shoot a few weeks after revealing his new look … and, it caused a firestorm — and a ton of wisecracks from his friends — in the comments section.

BTW … Dobrik was just one of many big stars at the Snapchat event — he rubbed elbows with “Selling Sunset” star Chrishell Stause, YouTuber Francesca Farago, rapper Yung Gravy, Don Benjamin and Cheyenne Davis, among many other social media tastemakers.

During the evening Stause even said the creator she’d most like to collaborate with is Dobrik … and, she wants to “get him on Season 9” of the hit Netflix show.

“Pawn Stars” star Corey Harrison is thrilled his father, Rick, is getting married — and he’s more than happy to be his best man … if that’s what Rick decides.

Corey tells TMZ … this will be the third time he’s attending one of Rick’s weddings — having been by his dad’s side when he got hitched to Tracy Harrison in 1986 and Deanna Burditt in 2013.

“Big Hoss” says he’d be honored to be his dad’s best man, but Rick shouldn’t expect a bachelor party or a gift. Corey doesn’t think his dad would want a bachelor party, and jokes, “You can’t keep getting married every time you need a toaster!”

As we reported, on a visit to Chile, Rick popped the question to his girlfriend, Angie Polushkin — a Vegas nurse 18 years younger than him — presenting her with a ring he considers one of his most prized possessions from his iconic Gold & Silver Pawn Shop in Las Vegas.

Corey approves of Rick’s fiancée … telling us he’s met Angie several times and thinks she’s great, and most importantly, she clearly loves Rick. He quips that she’s a perfect fit for the family … she must be a little “screwed up” if she likes Rick!