Fitness & Exercise

He's 78-years-old ... but golf legend Gary Player tells TMZ Sports he still knocks out 5,200 sit-ups every single week!!!!!!!!

This is no joke.

The South African stallion was making his way through NYC Monday when he told us about his incredible fitness regimen ... a regimen that landed him on the cover of ESPN's Body Issue in 2013.

And it's clear from the video ... even as he's pushing 80, Player has no intention of slowing down anytime soon.

Ajay Rochester -- who hosted Australia's version of "The Biggest Loser" -- just had 1.5 Liters of fat sucked out of her body ... but first, she bellied up to a 1,000 calorie breakfast of bacon, eggs and hash browns.

Ajay hit up Dr. Aaron Rollins Friday at Elite Body Sculpture in Bev Hills, and got something called an Airsculpt Laser Lipo -- a fancy name for precision fat sucking. We're told Ajay was 100% awake for the procedure -- no needles, no cutting, no stitches -- while the doc targeted her chin and arms.

Ajay says her ultimate goal is rocking sleeveless dresses and tops -- not that she was thinking about that when breakfast was served.

He just retired, but ex-Super Bowl hero James Harrison is still out to prove he can outlift EVERYONE in the NFL ... by crashing the Pittsburgh Steelers gym and dominating the bench press.

With current Steelers Ike Taylor and Lawrence Timmons spotting him (shirtless for some reason), the former linebacker repped out 405 POUNDS like it was nothing.

The video is pretty hilarious ... and a tad frightening ... with 36-year-old Harrison explaining that he doesn't plan on shrinking down in his retirement.

Sure, she put a hurtin' on a heavy bag in that new Under Armour ad -- but how would Gisele do in a real fight with fellow supermodel pugilist Adriana Lima?? She'd get her perfectly sculpted ass kicked.

At least according to actual boxing champ Peter "Kid Chocolate" Quillin.

By now you've seen the Gisele ad -- and it's impressive -- but she can't hold a candle to Lima ... who's been boxing for years and even trained with Manny Pacquaio.

"Seeing [Lima] hit the pads, I expect her to do better in the ring than Gisele," Quillin says ... noting her form, her power and her precision.

"Hitting the pads is different than hitting the bag ... it's harder. You have to have more direction with the pads. But you really never know what kind of fight someone has until they step in the ring."

But Quillin says he was definitely impressed with Gisele too ... especially when it came to her physique.

Rita Ora slipped into the sexiest body suit since Catwoman ... and took it for a stroll around London Wednesday.

Move over Jane Fonda ... 'cause Johnny Manziel is an aerobics instructor now.

Kinda.

The Cleveland Browns quarterback is the star of a new Snickers commercial where he plays a leggings-wearing, headband-sporting exercise teacher ... leading a class full of confused women.

It's all a part of those "You're Not You When You're Hungry" ads ... complete with the epiphany that he's supposed to be on a football field instead of an aerobics studio.

So, if you're keeping score -- that's TWO endorsement deals for the backup QB in Cleveland.

Hugh Jackman ... strong dude.

The actor hit the gym to bulk up for his role as Blackbeard in the upcoming movie, "Pan" -- and busted out a set of deadlifts with 180 kgs of weight ... aka 397 pounds!!!

It's pretty impressive -- but it ain't exactly NFL caliber strength ... especially compared to former NFL defensive end Phillip Daniels who cranked out 675 POUNDS during a set back in 2011.

Still, props to Jackman.

When Ryan Seacrest needs a workout on the open sea, he doesn't settle for a treadmill ... he just takes some laps on his massive lido deck.

We got Ryan and his model girlfriend Shayna Taylor in Saint-Tropez Thursday getting their morning run in ... without ever leaving the confines of their multi-million dollar sea castle.

There will be no Gold's Gym for Ryan, who's making his "American Idol" money work for him in many ways on the French Riviera.

OK, it may not be Bill Gates-level cash ... but Ryan's yacht certainly gives Mr. Microsoft's a run for his money.

The all-black outfits they're sporting seem appropriate for maximum water loss ... but from the looks of it, he hasn't even broken a sweat yet.

Think you two need another lap! It's OK, we'll wait.

Ian Somerhalder and Nikki Reed don't just eat healthy ... they look damn happy doing it.

Ian and Nikki hit up the Farmer's Market in Los Angeles Sunday and the newly minted couple couldn't contain their happiness with fancy juice drinks in hand.

We're guessing it's because they both realize how hot their significant other is.

The couple's taking things to the next level ... attending the Creative Arts Emmys together Saturday -- and even adopting a horse.

Sylvester Stallone is destined to do an "Expendables 15" if genetics has anything to do with it ... because we got photos of his 92-year-old mom doing CrossFit!

Jackie Stallone is a certified bad ass ... with no machine in the gym out of bounds.

During her workout, Jackie hits the rowing machine, rings, medicine ball ... and even gets in some squats before knocking out a few bench presses.

Chris Brown is enjoying life again as a totally free man ... who is also totally free of abs. Turns out not EVERY guy who does time, comes out looking diesel. Why?

It's kinda like real estate -- location, location, location! We should explain.

Alex Pettyfer pissed off a group of jacked up dudes working out at Muscle Beach in Venice ... and we got video of their heated exchange.

Pettyfer was passing the famous weight lifting hangout when he asked the guys working out how much they lift. For some reason, a few of the lifters took offense ... and both sides started arguing.

In the video, one of the lifters accuses Alex of talking "s**t" ... which the "Magic Mike" star adamantly denies.

The musclehead who mainly argued with Alex tell us ... it started when the actor asked him how much he lifted. The dude lashed back, "How much do you make?" For some reason that triggered the argument.

Eventually Alex left after the two sides worked things out.

Shortly after the incident, the lifters told our photog it was just a misunderstanding ... and they've got nothing but love for Pettyfer.

Lea Michele stepped out publicly for the first time with her new guy Matthew Paetz ... but the photos look about as genuine as Matthew's claim that he wasn't a gigolo.

The pics show Lea and Matthew, guns out, on a leisurely hike -- and look like classic set up shots pre-planned with photo agencies. They're even wearing matching sneakers.

Our take -- Lea is screaming to the world she doesn't care about Paetz's past -- remember he claims he was only coaching gigolos, not doing the gigoloing himself.

A paparazzo was arrested for allegedly threatening the life of a huge celebrity trainer ... and then ominously reaching for what the trainer believed was a deadly weapon.

Harley Pasternak -- who trains Kanye West, Katy Perry, Miley Cyrus, Usher, Rihanna and a slew of other celebs -- told cops paparazzi showed up at his home Sunday because they got a tip he was about to train Robert Pattinson.

Harley says he told the paps Pattinson wasn't coming to his house but they didn't believe him. The paps got more aggressive and came onto his property. Harley told police he then walked out and ordered the photogs to leave, and that's when the photog in question threatened, "I'm gonna kill you and your family."

Harley says the photog reached for something in his car ... fearing it was a weapon, the trainer subdued the guy.

The photog denied making any death threats and insists Harley was the aggressor ... attempting to pull off his hubcaps with his bare hands. But a neighbor told cops she heard the death threat loud and clear. That was enough for police to hook the guy up and haul him to jail.

By the way ... the photog admits he was reaching for a weapon of sorts ... pepper spray.

Senator Claire McCaskill -- who grilled Dr. Oz like a cheeseburger during Tuesday's hearing -- was incredulous over the Doc's "miracle pill" because she's walked the walk ... sources connected to the Senate Subcommittee on Consumer Protection tell TMZ.

McCaskill lost a ton of weight in 2011 ... actually more like 50 pounds. She did it the old fashion way -- diet and exercise -- and she was proud of it. We're told she thinks diet shortcuts are ineffective and often fraudulent.

So when Oz came to The Hill ... we're told McCaskill was locked and loaded for a showdown over Oz touting green coffee beans as a miracle drug. One of McCaskill's staffers tells TMZ ... this was not a vendetta against Oz, and others have told us the same -- that she just thinks these quick fixes are harmful, especially when they're endorsed by credible people.

For Oz's part ... we're told he and his staff privately acknowledged he went too far on the air, and pulled back on the hyperbole several years ago.

President Obama wasn't going soft with those puny dumbbells, he was going smart -- at least according to the fitness guru behind "Body By Jake."

Jake Steinfeld weighed in on Obama's now famous workout in Poland -- and while a lot of people are giving the Prez crap ... Jake's giving him props for hitting the gym at all.

When we spotted Jake in Bev Hills ... he was quick to defend B.O. pumping iron with light weights ... because he says sometimes it's better to go for higher reps when you're squeezing in a quick workout on the road.

As for the President's chosen exercises and form -- you gotta hear why Jake was actually impressed.

He also reveals who he considers our "most fit" Commander-in-Chief ever.

Hint: It's NOT William H. Taft.