Fitness & Exercise

Rob Kardashian put on his best pair of Yeezys and hit the gym with his girl, Blac Chyna -- and then she showed us exactly how she got him to work out in the first place.

BC posted a clip ... first from the kitchen -- looks like breakfast -- and then from the gym. You can clearly hear a guy in the background the whole time.

Our first clue it's Rob -- the guy's wearing Yeezys, the official footwear of Kardashian-Jenners everywhere. Also, the bird's-eye view of Chyna's boobs while she's on the elliptical is a dead giveaway. For the record, she's not showing a bit ... yet.

Get it, Rob!

If Usher can act as well as he throws a punch, he's gonna kill as boxing legend Sugar Ray Leonard in the upcoming Roberto Duran biopic "Hands of Stone."

Usher's actually been training for 2 years at Decatur Boxing Club outside Atlanta. The club's owner Xavier Biggs tells us his student put in two-a-days -- 2 hours a day, 6 days a week and even met with Sugar Ray to prepare for the role in the film.

Filming has wrapped, but Usher hasn't stopped climbing into the ring. Biggs -- whose brother won Olympic gold -- says the singer's gotten so good he can hang with the pros.

With GB Packers coach Mike McCarthy ripping Eddie Lacy for being out of shape this season -- there's one man who says he can save the embattled running back ... THE P90X GUY!!!!

In case you missed it ... Lacy was heavily criticized for appearing larger than usual when he arrived to camp to kick off the 2015 season ... and never seemed to drop the excess weight.

McCarthy says Lacy needs to get his ass in shape for next season ... or else.

Enter fitness mega-mogul Tony Horton -- creator of the world famous P90X program -- who says he would LOVE the opportunity to PERSONALLY train Lacy this off-season ... because he's confident he get real results.

Horton tells us he's already got a 3-month bootcamp style plan in mind -- which would get Lacy back into top form.

"Time is ticking ... so it's time for him to step up."

BTW, a bunch of NFL stars have raved about P90X -- including Ray Lewis.

Taylor Swift and BFF Selena Gomez looked super hot sans makeup after their workout Monday in West Hollywood.

The squad members hit up Body By Simone, where dance is heavily incorporated into the exercise.

Envious much?

Seems there's a bright side to not making the playoffs ... Double Doubles ... 'cause Rams stud Akeem Ayers says he's gonna start his off-season conditioning at IN-N-OUT!!!

Ayers was out at Mastro's grabbing a "light" bite when we asked him what would be the first thing he stuffs his face with when the season is finito ... and he no longer has to watch what he eats.

Peep the clip -- Akeem KNOWS what he wants ... and how he wants it ... saying he's going full fat boy at the fast food joint, with "animal style" everything (grilled onions, special sauce, cheese).

Richard Simmons has not been seen in public for almost 2 years, and that's exactly the way he wants it because he just doesn't want to be famous anymore.

It's coming up on 2 years since Richard vanished from public view ... abandoning longtime friends, and even turning his back on his famous exercise studio where he was a fixture.

Friends and family were so alarmed they called the police, who did a welfare check in January, but the cops say Richard was lucid and relaxed.

Richard's rep tells TMZ, the exercise guru is "happily living life outside the public eye." Richard's people have never said why he abruptly disappeared ... mostly retreating to the confines of his home.

It's interesting ... although Richard hasn't shown up at his exercise studio for well over a year, when you call the number it sounds like Richard may always return the next day ... but that he just isn't there "today."

The rep says Richard is still committed to helping the "obese and overlooked" and is working "behind the scenes" on charity projects.

Cam Newton called out Kevin Hart -- challenging the comic to bang out a set of 225 on the bench press ... AND KEVIN HART ANSWERED THE CALL!!

Cam, Kev and Ice Cube were at Harding High in North Carolina -- where they donated $7,500 for a new weight room -- when Cam put Kevin on the spot with the question that shook his manhood to the core ... how much can you bench, bro???

Cam started a "225" chant -- Kev asked Cube to hold his Santa hat -- and then it was on!!!

He's been out of the NFL for 2 years ... but Braylon Edwards is CRUSHING IT in the gym -- turning himself into a monster ... and he insists he's 100% roid-free.

Edwards has basically been living in the gym and working out with a hardcore crew. He looks bigger than he ever was during his time in the league.

Unclear if the 32-year-old is training for a comeback (unlikely after 5 knee surgeries) or just enjoys getting his pump on ... but he insists he's au naturel.

"I don't take roids I work out everyday no exceptions no excuses."

Exhibit A for dudes to get into a yoga class -- Colin Farrell dripping sweat after getting his tree pose on ... probably some downward dog too.

Colin air-dried on his way out of class Monday in West Hollywood. Yoga seems to be his workout of choice lately -- he's been spotted leaving classes all year.

Khloe Kardashian's made a full recovery from a staph infection because she was back to her regular workout regimen.

Khloe hit SoulCycle Sunday in Bev Hills to burn some calories. She seemed to enjoy the workout, but remained quiet when our photog asked about Lamar.

It's the first time we've seen her back to her usual routine since she was diagnosed. Makes sense ... a sweaty gym environment is NO place to fight off staph.

Besides her regular workout, Khloe's also back to sporting the Adidas logo -- a clear sign, it's back on with James Harden.

Alessandra Ambrosio reached deep into her closet over the weekend and dusted off her rollerblades to exercise at the beach in Santa Monica.

If anyone can make rollerblading a thing again, it would be her. Or more accurately ... her ass.

If you're wondering how Bradley Cooper gets his rock hard bod and lands hot chick after hot chick, this video of him with his boxing gloves on pretty much explains it.

Brad got some pointers in the ring from a trainer Monday morning while working out at Gotham Gym in NYC. It looks like he's really learning the tricks of the trade, especially the ole stick and move.

We looked, and he doesn't appear to have any boxing roles in the works ... so this could just be him getting a jump on his holiday calorie burn -- or a way to impress a new chick.

D-Wade's been workin' out.

The Heat superstar got his swoll on during a training session at DBC Fitness in Miami last week -- rippin' out a set of reverse grip cable flys ... and dude looked ripped.

Front's not too shabby either.

Answer: Hemsworth ... after he dropped major lbs for his starring role in Ron Howard's upcoming "In the Heart of the Sea."

Hemsworth plays a sailor stranded at sea in the Moby Dick-inspired flick, so he obviously got way into character. He posted the throwback pic from the set saying he wouldn't recommend the diet to anyone.

Hard to believe that's the same guy who plays Thor, but the good news is Chris is back to his standard beefy bod since filming.

Mama June has hard evidence she's trimming down her waistline ... she's back to wearing blue jeans!

We got June arriving at LAX with a friend, and while it was clear she'd continued her pattern of dropping lbs -- we didn't know just how much ... until her friend pointed out June's new wardrobe.

The "Here Comes Honey Boo Boo" matriarch was rocking some distressed denim, and says it's been years since she zipped up a pair.