Fitness & Exercise

Scheana Shay is standing by her hubby, Brock Davies, as the two reality TV stars recently hit Puerto Rico for an Ironman triathlon!

The series of challenges -- a 1.2-mile swim, a 56-mile bike ride and a 13.1-mile run -- were exactly half the length of a traditional Ironman challenge ... mad respect, Brock!

Cheerin' on her man, The "Vanderpump Rules" alum planted a smooch after her bulky baby daddy completed one of his races!

Swim, bike, run ... and then have some fun with our photo gallery above -- see Brock and Scheana take Puerto Rico!

Brittany Mahomes is back in the gym only months after giving birth to her third child ... and she's proud of her gains.

The wife of Kansas City Chiefs quarterback Patrick Mahomes shared a mirror selfie Wednesday during a workout ... and she's looking super fit postpartum.

Brittany showed off her body in a pink sports bra, matching leggings and matching shoes ... playfully asking her followers, "How much pink is too much?"

If Jonathan Majors ever gets tired of being an A-list actor, weightlifting legend Ronnie Coleman tells TMZ Sports the dude could seriously be a pro bodybuilder!!

Coleman made the proclamation in a sit-down with us on Tuesday -- just a few days after he had put Majors through a grueling chest and arms workout in Colombia.

Coleman said he was so impressed with Majors' muscles during the gym session, he came away certain that if he coached Majors for around 6-to-12 months, the 35-year-old would be able to compete for hardware at real-deal physique shows.

You better watch where you're walkin', cuz this sweaty stud came thru drippin' with one slippery snap! Can you guess which Hollywood hunk put his post-workout bod on full display in this eye-popping photo?

We'll give you a few clues, but then it's on you .... He's got a sexy accent and starred in "Snowfall." His shredded bod may be "outside the wire" and based on his bulky physique, Anthony Mackie should be shakin' in his boots!

Travis Barker laced up his sneakers and hit the pavement over the weekend for a 5k and he clocked a really impressive time.

The Blink-182 drummer took part in the Big 5 Sporting Goods Los Angeles 5K on Saturday at Dodger Stadium. He crossed the finish line in 22 minutes and 31 seconds, averaging an impressive 7:15 per mile and securing 95th place out of more than 8,000 runners!

Trav has been embracing distance running as part of his fitness journey, especially since launching his Travis Barker's "Run Travis Run" last year.

Lizzo says her new weight loss is gonna have people asking if she got a Brazilian Butt Lift ... and, she's says TMZ had better investigate to put the rumors to bed.

The singer-songwriter posted a clip to Instagram yesterday ... stunning in a red lingerie top and a pair of matching see-through pants -- which did little to hide the underwear underneath.

Lizzo shakes her booty a bit ... and, says the whole look is "giving BBL" -- meaning she's looking like she went under the knife to get a backside like that.

Ice Spice's Munchkin fan base can sleep through the night again ... she's gained her twerking weight back and is flaunting her stuff out in Paris!!!

The rapper had social media in a tizzy a few months ago with a skinny selfie -- but that status is no longer the case as she posed in front of the Eiffel Tower on Wednesday.

She captioned the post, "Thick Again" ... which is likely the name of her next single, judging from the audio that's floating around.

Tourists hoping to marvel at a majestic black panther at a Chinese zoo may have thought they wandered into the hippo section ... because the predator's belly was dragging nearly down to the ground!!!

Superhero movies have given black panthers global notoriety in the past decade, but video from inside the Chengdu Zoo in Sichuan Province this week revealed a jungle cat more closely resembling Garfield.

The fat feline gingerly waddles around the enclosure ... each step appearing to be a calculated task to keep her stomach from scraping the dirt.

FBI Director Kash Patel wants UFC fighters to train his Agents ... and well there's one that is totally down! 🙋🏽 Justin Gaethje.

TMZ Sports spoke to 36-year-old Gaethje, who at the moment is a little tied up preparing for his co-main event scrap with Rafael Fiziev, who was plugged in for an injured Dan Hooker this week.

After the March 8 scrap in Las Vegas, the lightweight contender is down to help the country's top law enforcement agency in any way he can ... training personnel, or just kickin' the ass himself.

Ryan Seacrest is getting big with one of his bros in the gym ... sharing a workout video with the guy who replaced him on "Live with Kelly and Ryan" -- Mark Conseulos!

The popular host shared a short clip to social media Friday which shows Consuelos doing sit-ups ... telling fans he's just trying to get a workout in.

But, when he goes back to the ground, Seacrest is revealed to be stretching out behind him ... and, MC keeps ending up right between his pal's legs whenever he's fully laid back.

Shawn Mendes is taking a break from his concert tour for a hike in L.A. with a friend ... and the singer is showing no "Mercy," looking leaner than ever!

Shawn's without a shirt here -- unclear if he just gone done doing laundry on his washboard abs -- looking shredded as he's walking barefoot on a trail in L.A.'s Griffith Park after taking off a pair of hiking shoes.

Shawn was all smiles Thursday, showing off his tattoos and a simple gold-chain necklace, chatting it up with his unidentified pal, who opted for slide slippers and a white T-shirt.

Can you guess which Hollywood hottie put her firm buns on display in this eye-popping sexy workout shot?

When this fitness influencer isn't stealin' the show in the gym with her toned booty, you can catch her spinnin' some discs and turnin' up the party!

Toned abs and hittin' the gym are obviously a popular trend in Hollywood, but can you guess which studly star put his washboard abs on full display in this shredded shot?

This actor is used to showin' off his hot bod, especially when he's out in the wild adventuring with his famous brother ... He may be a traitor but hey, if you've got it, go on and flaunt it dude!

Are you heatin' up yet? Are your muscles feelin' swole?

Well, if you're needing some more pump, click through these in-shape celebs and vote who'd you rather break a sweat with!

Ab cracks can be sexy ... especially on women ... and these sizzling celebs know how to show them off ... but can you guess who they are?

Let's see if you can ... check out these hot pics of famous ladies in their bikinis and tight workout outfits that capture their feminine rock hard physiques with their ab cracks running down the center of their stomachs.

Hey, do you need a cold compress to place on your forehead yet?

Well, if you don't, then after you click through each and every one of these eye-popping photos, you'll certainly need something to cool off.

And while you're doing that, make sure to tally up how many these beautiful babes you were able to put a name to.

Khloé Kardashian is revealing her workout motivation ... and it's S-E-X.

Khloé admitted her true intentions behind staying in shape during a conversation with Disso Queen Laura Wasser on her podcast, "Khloe In Wonder Land."

KK tells Laura ... "Listen, I work out to get laid. I'm like, 'Someone's gonna see this naked one day,' and it has to look good."

Lizzo's saying it's "About Damn Time" the internet show her some love ... 'cause she just hit her weight goals -- dropping a whole lot of body fat in the process!

The singer-songwriter took to Instagram Saturday to announce her results ... sharing a video from the beginning of her weight loss journey to remind people about her humble beginnings down this fitness road.

The video then cuts to Lizzo giddily telling fans that after a long process, she stepped on the scale today and realized she hit her fitness goal ... a huge moment she says proves fans can do anything they put their minds too.