Fitness & Exercise

'Bachelorette' star Ben Z is more concerned about his rock hard bod than a follow-up run on "The Bachelor."

Ben surfaced this weekend in San Francisco where he competed in his first bodybuilding competition. He didn't win, but more importantly he didn't finish in last place ... ultimately coming in 8th out of 15.

Ben tells us he's 210 lbs now ... down 90 lbs from his days as a linebacker playing college football, which is when that "before" pic was taken. He claims he's leaned out naturally with diet and exercise -- sans steroids or testosterone boosters.

Many thought since he was last season's resident hardbodied badass ... he'd be a shoe-in for "The Bachelor." He tells us producers approached him but he didn't get back in time with his answer.

Spending too much time in the gym, Ben?

John Stamos should be using natural supplements instead of GHB for his fitness regimen ... so says one of the biggest lifters in the game.

Christina Milian has a great way to bounce back after a breakup -- hit the floor for a playful workout with your twerk guru. Works for us.

Milian and trainer Lexy Panterra decided to work their glutes ... although we suspect this session is more about Christina sending messages, such as: 1. Hey guys, I'm single, and 2. Hey, Lil Wayne ... hungry for cake?

Either way, this looks like a great way to shake off any lingering heartbreak ... while staying in shape, of course.

Giants fans looking for a boost, look no further than this video of Jason Pierre-Paul -- ON HIS GRIND, in the gym, and apparently ... ready to bounce back from his horrific hand injury.

Drake is taking this SWOLL patrol thing very seriously, especially in the arms department ... and it might have something to do with impressing his lady friend Serena Williams.

Champagne Papi hit the gym -- it was a curls-for-the-girls day ... and you gotta think all that upper body strength will come in handy on date night. Fact is, Serena's physique is world class -- so you'd expect Drizzy to step up his game too.

When Serena's the gain, you don't mind the pain.

No days off when you're a pro athlete ... even during a beach vacation in Mexico ... just ask Lindsey Vonn who workin' on her fitness while workin' on her tan.

Vonn and a bunch of her besties just got back from a girls trip to Cabo San Lucas -- but you can see in the pics, it wasn't just about margaritas and tequila shots ... Vonn was determined to keep her ass in shape.

Even with a busted ankle, Vonn knocked out some side bends and planks ... with her friends even giving her a spot.

Sylvester Stallone knows the secret to defeating Floyd Mayweather Jr. … but it doesn’t have anything to do with his next opponent, Andre Berto.

Almost no one is giving Berto a chance to win the fight -- so we asked Sly if he thinks he's even got a puncher's chance to upset Money. Check it out ... Sly says there's a chance, but not a puncher's one.

Stallone also throws a playful jab at "Southpaw" star Jake Gyllenhaal's on the topic of big screen boxers. We'll give you one guess which actor/fighter he IS backing.

Lamar Odom is taking at least one piece of advice from his ex-wife Khloe Kardashian -- he's taking steps to get fit by hitting the gym again on the reg.

Danica Patrick's become a devout follower of yoga ... and she's making us devout fans of her following yoga.

The Arnold Schwarzenegger and J.J. Watt bromance is HEATING UP -- with the two meeting up for a late-night gym sesh ... to blast out a few squats?!

Of course, the Houston Texans star struck up a friendship with Ahnold at the CMT Awards in Nashville last month -- and clearly, they've kept in touch.

So, with J.J. in L.A. -- it appears Arnold invited Watt back to his home gym ... where, according to Schwarzenegger, he challenged Watt to do 50 reps on his squat machine.

The result??

"He did 51. After dinner," Arnold said ... "Watch out, quarterbacks."

#BestBuds

Question -- How is Magic Johnson like Jesus?

Answer -- They both walk on water.

Check out Magic Johnson working out in his treadmill ... while on his YACHT ... off the coast of France.

Who says cheerleaders aren't athletes?!!

Check out this video of Houston Texans cheerleader Daranesha busting out a pretty INSANE ab workout during a team gym session ... while hanging off a heavy bag!

It's the same workout Dallas Cowboys superstar Dez Bryant busts out when he's trying to get his stomach right ... and trust us, it's not easy.

By the way, on her official Texans bio video, Daranesha says she mostly stays in shape by dancing around the house all day.

Yeah right.

#Beast.

This is adding insult to alleged felony -- Diddy’s kettlebell arrest is now being mocked by workout fiends ... who are using his alleged weapon of choice to get in shape and get laughs.

The day after he got arrested ... “The Diddy Workout” instantly became a thing for gym rats ... who've taken to grabbing kettlebells, doing a few reps and belting out Diddy's catchphrase ... “take that, take that.” It's as ridiculous looking as it sounds.

Based on social media, trainers are picking up on the craze ... adding the "Workout" to classes.

So, Diddy's bust is a silver lining for muscle heads. Still totally sucks for Diddy.

Ray Rice is clearly expecting to return to the NFL -- training every single day at an exclusive athletic facility in Connecticut ... TMZ Sports has learned.

The former Baltimore Ravens running back is a regular at the BlueStreak Sports Training Center in Stamford, CT ... and we're told he's been impressive with speed and footwork drills.

We're told Rice has been at the center for the past "few months."

Rice is eligible to play in the NFL again after serving his suspension for the domestic violence incident -- but the question now ... is there a team that will actually take a chance on Rice?

Stay tuned ...

Hey ... you ... guy or girl with sorta-muscles -- STOP TAKING PICS OF YOURSELF IN THE FRICKIN' GYM ... 'cause it's pissing off Mr. Olympia.

With the gym-selfie craze going global, reigning body building champ Phil Heath says he CAN'T STAND when people stop their lift to shoot themselves in the middle of a workout.

"It's pretty annoying ... they should be in there killing it, you know?!"

Check out the clip -- Heath says you should be concentrating on blowing up your muscles ... and not your stupid timeline.

Listen to him ... he's bigger than you.

You know when people tell you to "push it" in the gym?