More proof Shaq is really REALLY strong ... he just did a full set of seated rows at the gym using all of the weight on the machine .... PLUS AN ENTIRE CHRIS WEBBER.

The two former NBA stars and current TNT employees hit the gym together in Cleveland ... where Shaq decided to show off a little bit.

Check out the clip ... Shaq says he's going to lift C-Webb "instead of take shots" -- which could be a reference to the drama involving Webber and his old Fab Five teammates.

FYI -- Webber has been going back and forth with Jalen Rose stemming from a rift over a documentary about their legendary college hoops days at Michigan. Maybe Shaq was suggesting they worked it out already.

Check out 20 pics of the sexy star hitting the trails while you try not to feel bad about not getting off your couch alllllllllll weekend!

Dear Barack Obama ... DO NOT PISS OFF YOUR WIFE!!!

Check out this new footage of Michelle Obama going to town on a punching bag at the White House gym -- throwing punch combinations and a pretty devastating roundhouse kick!!

FLOTUS was showing off her Top 5 workout moves to celebrate the 5th anniversary of her Let's Move! campaign -- which is supposed to motivate Americans to get off their asses and get fit.

Michelle looks great in the video ... jumping rope, hitting squats and blasting her core.

#BringOnRondaRousey!

Memba Shawn Oakman -- that GIANT mountain of a college football player who became an Internet meme last year???

Well, he's back ... hitting a 40" box jump WHILE HOLDING 70 POUND DUMBBELLS IN EACH HAND!!!

TMZ Sports obtained footage of Baylor's famous 6'9" 280 pound defensive end getting in some hardcore strength training in Vegas -- and it's pretty impressive.

Oakman hit up the exclusive Athletic Gaines training center on Tuesday -- and worked out with Travelle Gaines, who's trained some of the best athletes in the world ... including Reggie Bush, Andrew Luck, Marshawn Lynch and LeSean McCoy.

We're told Oakman began the training session with light weights ... and moved up ... with Shawn capping out with the 70 pounds dumbbells.

Oakman will be a senior at Baylor next year ... and some experts think he could be the #1 overall pick.

Keep your eye on this dude.

Mama June is joining a band ... in her lap.

The 'Honey Boo Boo' matriarch is so inspired by her recent 45 lb. weight loss, she's gunning to lose another 50, with the help of the Lap-Band.

We did the math ... she currently weighs in at 276 lbs., and if she achieves her gastric goal she'll go down to a svelte 226.

June made the decision to go under the knife because she's plateaued with her trainer and her relatively healthy diet.

She'll have the surgery this summer, which means she'll just miss bikini season.

Cristiano Ronaldo's 4-year-old son is already taking after his father ... working on his abs during a father/son training session ... and it's friggin' adorable.

The kid -- Cristiano Ronaldo Jr. -- started off by holding his dad's feet while the soccer star ripped off a set of crunches.

Then the tables turned ... with dad pushing his kid to knock out a solid 10 sit-ups ... which he does without a problem!

Tim McGraw ... talk about country strong.

Guests at the Hotel Del Coronado near San Diego were stunned when a semi-exposed and hairless Tim put on a gun show before performing at his own show later that night.

The country star -- who turns 48 today -- credits his godly physique to the Paleo diet and CrossFit.

Bravo fitness star Greg Plitt allegedly made a handshake deal with a filmmaker to create his popular fitness show, but never paid the guy ... who's now going after Greg's estate to get the cash.

According to docs ... filmmaker Devin Coury says he and Plitt had an oral contract for his online "Raw Series" back in 2009. Coury says he shot the footage for the program, and was owed $50,000 for his services.

Of course, Plitt died last year when he was hit by a train -- but Coury says he never got a dime of the 50 large. In the docs, Coury says he saw Plitt one last time in 2013, and got his word he would make things right ... but that never happened.

As for proof there was really a deal -- Coury's submitted invoices he sent to Greg.

Coury admits trying to get the money from his dead friend's estate is a "fragile situation" -- but he's pressing forward with his claim.

The Seattle Seahawks stormed the beach in Hawaii this week ... for a full, hardcore workout session on the sand ... in front of a bunch of normies trying to relax on the sand.

It's pretty cool -- imagine you're on a lounge chair with your pina colada ... when all of the sudden Russell Wilson, Richard Sherman and the rest of the squad roll up and start wind-sprinting!

BTW -- Richard was wearing those 5-toed shoe thingies ... and the whole gang brought it together for a group huddle at the end of the training sesh.

Check out the pics.

Just one month after he was hit in the shoulder in a drive by shooting, Chris Johnson is already getting ready to return to the NFL -- and sources tell us he's "in talks" with multiple NFL teams.

Johnson has previously said he's been checked out by a doctor -- and insists he's good to go.

The big question was ... will NFL teams be interested?

We're told from some pretty solid sources ... at the very least, there are teams that have expressed interest in the 29-year-old -- who had been training with NFL insider Jay Glazer before the shooting.

In fact, Glazer gave Johnson high praise ... even after the incident ... saying he's not a bad guy, he was just in the wrong place at the wrong time.

No word on how close Johnson is to a deal ... but it's clear, CJ2K is convinced he'll be on a roster in 2015.

Bo Jackson used to be the king of TWO sports ... now, he's got problems handling a #1.

Jackson called in to "TMZ Hollywood Sports" and told us about how he's getting his 52-year-old body ready for his annual charity cycling event, Bo Bikes Bama ... but he's moving a little slower than he used to.

"I got up this morning and went to the bathroom to pee ... and pulled a muscle," Bo joked.

But the real headline could be that Bo thinks he's gonna get his "BUTT KICKED" in the ride by his former nemesis Brian Bosworth -- who's announced he's participating this year.

Snoop Dogg 's wife is flashing her own skillz as a potential video vixen ... because Shante Broadus and Snoop's daughter Cori are twerking their asses off with L.A.'s best.

Despite reports of its death ... twerking is very much still a thing, and we got video of Snoop's ladies jumping on the bootywagon with premier ass-shaker, Lexy Panterra. Sources close to Lexy tell us Shante and Cori are burning calories with her every Monday.

Lexy's biz is taking off ... she even created a twerking app with singer Christina Milian -- which we're guessing is Lil' Wayne approved.

The Doggfather's so impressed, we're told he and Shante are flying Lexy to their home in Vegas for 2 weeks ... so they don't miss any classes.

We got Shante after class, and let's just say ... Snoop's gonna be a very happy man.

Bo Jackson and Brian Bosworth ... on the same team?!

It's been 27 years since Bo famously trucked The Boz on "Monday Night Football" ... but now, the former NFL rivals are working TOGETHER to help families in Alabama.

Bosworth announced he's going to participate in Bo's annual cycling fundraiser, "Bo Bikes Bama" -- which raises money to help build community storm shelters across the state.

Boz tweeted about it -- saying, "On the same team at last."

Who'da thunk it?

STOP BODY-SHAMING JAMEIS WINSTON ... he's got a perfect QB physique ... so says one of the most famous heavyset NFL quarterbacks of all time ... former NY Giants QB Jared Lorenzen.

Of course, Winston has been under fire from people who say he looks too fat, doughy, soft and out-of-shape to be a successful NFL QB ... especially after he went topless at his Pro Day this week (see pic above).

But Lorenzen -- aka "The Hefty Lefty" & "The Pillsbury Throwboy" -- says Winston needs to ignore the haters and focus on winning football games.

"He's not JaMarcus Russell. He's not fat by any means. He's just a big dude," Jared says. "He's got a great body to play quarterback. The little skinny guys don't make it. They can't take a hit."

"Look at RG3 ... small guy. Now he can't even run."

BTW -- when Lorenzen played for the Giants from 2004 to 2007 he usually hovered around 300 pounds.

"I was probably a little bit on the extreme side ... but I never missed a game due to injury in my career going all the way back to when I was young. Most big guys don't. They can take a pounding."

As for Jameis, Jared says the guy's potential is off the charts -- "He's only 21 and he doesn't even have his grown man body yet. He's gonna get bigger and faster."

BONUS -- Here's footage of Jared playing for the Northern Kentucky River Monsters last year. He's big ... but the dude can still ball.

Super Bowl champ Desmond Bishop knows the perfect way to get ready for the ultimate man's game ... and that's to train like a total chick.

Bishop and former SD Chargers player Lavelle Hawkins ditched the macho-man workouts for a "Body Blast Boot Camp" class in L.A. recently to strut, dip, and lunge with all the ladies.

If you think the two world class athletes breezed through their session you're wrong ... this class was run by celebrity trainer -- and super hot fitness model -- Lita Lewis, who Desmond tells TMZ Sports is a BEAST in the gym.

"It's pretty hard, a few times I had to tap out."

Lewis has worked out with huge sports stars like Kevin Durant and Justin Tuck in the past. Bishop says that while it's her program that gets them in the door, the fact that she's smokin' hot doesn't hurt either.

"I like the music, the dancing part of it, and her looks just make it that much better."

Ludacris says Manny Pacquiao has ZERO chance of beating Floyd Mayweather in their mega fight ... 'cause he's seen Mayweather train -- and Money is just too focused to lose.

Luda sat down for an interview with "The Breakfast Club" when DJ Envy asked the 'Furious 7' star his opinion on who'll have their arms raised when the final bell rings on May 2nd.

That's when Luda dropped some inside knowledge sure to make the whole Philippines nervous ... saying he dropped by Mayweather's training camp in Vegas recently and saw a whole different Floyd.

"I've never in my life seen him this focused and training this hard."

Luda, who actually worked out with Floyd and his uncle Roger preparing for a role a couple of years ago, added that the whole Money Team is going extra hard for this one:

"If he usually runs 5 or 6 miles a day, he's running 8 or 9 miles a day. He knows everything is on the line."