Fitness & Exercise

Barack Obama hates baby shark. And, mommy shark. And, daddy shark. And, ALL OF THE SHARKS!!! Which is why #44 rocked a shark deterrent anklet while paddleboarding in Hawaii!

Check out the device on Obama's right ankle -- it's called a Sharkbanz and it claims to repel Jaws from snacking on you like a piece of chum!

Look, shark attacks in Hawaii don't happen THAT often -- but they do happen -- and when you're a former President, you don't wanna go out like Samuel L. Jackson in "Deep Blue Sea."

A company spokesperson tells us ... the band uses "patented magnetic technology developed by marine biologists to deter predatory shark species."

In fact, they've got a Navy Seal Diver on record crediting the band for saving him from a potential attack ... and we all know how much Obama respects the Seals!

The good news for Obama ... he didn't get eaten during his paddleboard session, so maybe it worked!

Barack Obama might be a little grayer on top these days ... but his bod's looking as fit as it did before he took office way back in the 2000s.

The former Prez is still living it up in Hawaii in the new year, and he's moved from the golf course to the ocean for some paddleboarding fun ... which looks like quite a workout too.

The shirtless shots of 44 might not be as jaw-dropping as buff Barack in the Aloha State back in 2008 -- shortly before he became President -- but still ... pretty impressive.

Obama has some work to do before he becomes a pro on the paddleboard, but the important thing is ... he keeps getting back up after he takes a spill.

As we reported ... both Barack and President Trump are tied as the most admired man of 2019 according to Gallup's annual poll, but they're both on very different paths to start 2020.

IT'S BRITNEY, BITCH!!!

Britney Spears is just a couple of days into the New Year but she's already in shut-down-the-internet mode ... with this ultra sultry yoga video!!!

She said to hell with custom yoga pants and threw on a purple bikini for a video she made Thursday and posted on her Instagram. It's a jaw-dropper ... she busts a bunch of tantalizing poses ... leaving little to the imagination.

Britney's all about getting incredibly active in 2020. She revealed she ran the 100-meter yard dash in 6.8 seconds. She says she used to run it in 6-flat in high school. Not bad.

This year, Britney says she wants to do a lot more acro yoga and the basics of yoga. She said, "I'm a beginner and it's kind of hard to let go .... learning to trust and letting someone else hold your body!!!"

Britney added, "I have a lot of things I keep bottled up so I have to keep my body moving!!!"

No one's complaining.

The actor who played the Peloton husband decided to try his hand at art imitating life, because in his real life he gave his girlfriend an Xmas present ... a Peloton bike!!!

Sean Hunter dared to test the social media attack squad that skewered him after acting in an ad where a husband got his wife the exercise bike. As you know, Peloton justified the ad by saying it promoted health, but it pulled the commercial nonetheless.

Sean said, "Here's hoping this goes over better the second time ... Merry Christmas to my actual girlfriend (pls don't leave me)."

GF Cassidy Baras seemed pleased, but then again so did Sean's pretend wife.

Sean has said he's been coping the best he could with the blowback from the ad, saying, "My 5 seconds of air time created an array of malicious feedback that is all associated with my face."

Jennifer Lopez is taking no days off for the holidays ... looking absolutely stunning before hitting the gym on Christmas Eve.

Check out these pics of J Lo strolling into her Tuesday workout in Miami ... she's got her rocking bod on full display in skintight spandex, and she's feeling the Xmas spirit with her red gym attire.

J Lo's got the kind of booty Santa would love to see on his lap ... yes, Alex Rodriguez is one lucky man.

Here's the World's Strongest Man overhead squatting the World's Best Tight End ... and yeah, it's GLORIOUS!!!

Rob Gronkowski and superstar strongman Martins Licis hit up Jay Glazer's Unbreakable Performance gym in L.A. on Wednesday ... and they bro'd down over some weights.

Unclear why the two got in a lift sesh ... but we're all sure as hell glad they did -- 'cause at some point, Licis decided to ditch the barbells and use 6'6", 268-pound Gronk as gym equipment!!

Licis -- a 29-year-old who's considered the future of strongman sports -- picked the Patriots legend up, put him over his head and squatted the guy like it was nothing!!

Of course, it kinda is nothing for the guy ... Licis famously lifted over 1,000 POUNDS of atlas stones in his World's Strongest Man win over the summer!!

Gronk's girlfriend, Camille Kostek, was impressed nonetheless, saying of the workout, "All the muscles in my entire body are equivalent to his one bicep . I have to step it up."

As for Licis, he clearly thought Gronk was a worthy gymmate ... writing on his social media, "Overhead squatting the lord of mischief, @gronk, is no easy feat of strength."

"This guy’s a unit."

By the way, if you want the key to looking like Gronk and Licis ... they seemed to reveal one of their gym secrets -- WORK SMALL MUSCLES FIRST!!

Kumail Nanjiani walked into his workout regimen for "Eternals" as one big softy and emerged totally yolked thanks to high-intensity training, and a major focus on 2 key body parts.

Check out these workout videos of Kumail pumping iron with Grant Roberts ... the celeb trainer tells TMZ Kumail's transformation from scrawny to sculpted was all about intensity, and they trained for a little over an hour a day, 5 times a week for 10 months.

Kumail hit every body part training with Grant, but we're told the actor needed the most work on his shoulder and biceps, which were physically lacking when he started hitting the gym back in January -- Grant's words, not ours.

As you know, Kumail's super proud of his new look for the upcoming Marvel movie. He just pulled the curtain back on his transformation, showing off his guns and ripped torso.

Kumail's trainer tells us they did all the muscle sculpting with dumbbells -- raising sets and overhead pressings in every angle imaginable -- and that's where most of his energy went.

Kumail Nanjiani looks like a new man after months and months of training and a strict nutrition regiment, which he says was no walk in the park ... for him or his wife.

The actor -- most famous for scrawny physique in "Silicon Valley" and "The Big Sick" -- posted two shirtless photos showing his now-ripped torso, and he's clearly been working out. He's got a six pack, a toned chest and super veiny arms now. Perfect for his new role in Marvel's upcoming "Eternals" movie -- in which he plays one of the superheroes.

Kumail writes, "I never thought I’d be one of those people who would post a thirsty shirtless, but I’ve worked way too hard for way too long so here we are." He went on to say he wanted to transform himself after being cast in the "Eternals" flick, adding, "I would not have been able to do this if I didn’t have a full year with the best trainers and nutritionists paid for by the biggest studio in the world." That would be Disney, of course ... also Marvel.

The guy also kept it real about the process, copping to the fact that he gets why he never looked like this before ... it's a ton of work, and requires Mickey-like resources to maintain.

Kumail went on to shout out a bunch of trainers and nutritionists who helped him along his journey ... and also his wife for putting up with his endless bitching about training and dieting.

Angelina Jolie, Richard Madden, Salma Hayek and a ton of other A-listers have also been announced as cast members for the new hero saga. Looks like it's shaping up well so far.

The "wife" in the derided Peloton ad is taking the mockery in stride, and unlike the "husband" in the spot ... she says everyone's been cool to her about it, and she considers all the hubbub to be a positive thing.

The actress, Monica Ruiz, was out walking her dog Sunday when she was asked about all the backlash to the commercial ... and she pretty much laughed it off like it's no big deal.

Monica says everyone's been really nice to her since the ad started getting roasted online -- along with being labeled sexist -- and contrary to popular belief ... she feels really lucky to have been part of it.

She also says she saw the jabs "Saturday Night Live" took at the ad over the weekend ... and she thought it was all hilarious.

It's interesting, because the actor who plays the Peloton hubby, Sean Hunter, seems to be having the opposite experience of Monica's. He said he doesn't find the situation -- or the 'SNL' jokes --- to be all that humorous, because he's getting flooded with hate mail while the world laughs.

Of course, Sean wasn't recruited to be in an ad for Ryan Reynold's Aviation Gin to help make light of the controversy like Monica was ... so he kinda got the shaft there.

The Peloton controversy might be big laughs for 'SNL' -- but the guy who plays the husband in that ad is pissed, because while everyone else is laughing ... he's flooded with hate mail.

Sean Hunter was out in Hermosa Beach, CA Saturday night .. after he'd seen 'SNL' take not one, but two shots at the Peloton spot that seemed to urge men to buy the exercise bike for their wives for Christmas. You can tell in the video ... Sean's still in his feelings over all the backlash.

If ya missed it, Colin Jost took a direct shot during the Weekend Update segment, calling the ad sexist ... but added a really funny punchline. Sean says the joke was "frustrating" to him.

He added 'SNL' was "reinforcing that that's what people are thinking about it. I don't feel that way. That's not the truth about the commercial at all."

Sean says he's in no mood to laugh about the commercial yet, because of what keeps popping up on his social media.

Interestingly, he said he WAS entertained by the Aviation Gin ad his costar, Monica Ruiz, did ... which clearly poked fun at the theory Sean was playing an emotionally abusive husband in the spot.

As for getting his own Peloton? Sean, whose day job is being an elementary school teacher, sure seemed to be in the market earlier on Saturday. He was checking out a ride in an L.A. Peloton store.

Apparently, he was just window shopping -- or looking for some publicity -- because he explained why there won't be one under his tree this year.

All that controversy over the Peloton commercial critics are blasting for body-shaming just landed the star of it a hilarious new gig ... with Ryan Reynolds.

Monica Ruiz is the actress who plays the wife -- sorry, long-suffering wife to many -- in that Christmas gift themed fitness spot, but now she's also starring in an ad for Aviation Gin ... and it plays perfectly off all the Peloton buzz.

Based on the commercial ... the formerly spinning-crazed wife is now more interested in downing booze with her girls. The strong insinuation here is she's left the husband who "forced" her to get on the bike every day.

The ladies toast to "new beginnings" before the wife pounds her martini. One of her GFs even says, "You look great, by the way."

Of course, Aviation is Ryan's company ... and ya gotta hand it to his marketing team for capitalizing off the social media uproar over Peloton.

All the backlash against the Peloton has impacted the ad's actors -- Monica and her "hubby" Sean Hunter -- who've dodged interviews all week. Hunter did eventually speak out in "Psychology Today."

Leave it to Reynolds, though, to lighten the mood. He tweeted his company's commercial with the caption, "Exercise bike not included."

The actor who played the husband in what some see as a "sexist" Peloton ad is afraid the backlash he's getting from keyboard warriors will have a negative impact on his career.

Sean Hunter is the man in the infamous holiday ad who gifts his wife a Peloton bike. When he's not acting he's an elementary school teacher ... and he's defending himself, and the controversial ad, in Psychology Today .. of all places.

Sean says initial reviews of his Peloton gig were mostly positive, but everything changed when the ad went viral. Now, his take is, "My 5 seconds of air time created an array of malicious feedback that is all associated with my face."

He adds, "My friend texted me today declaring that I’m ‘a symbol of the patriarchy' ... As my face continues to be screen shot online, I wonder what repercussions will come back to me."

Sean says he's "grappling with the negative opinions as none of them have been constructively helpful."

If it makes him feel better ... at least some of the memes about the ad have clearly been in jest -- and even comedian Sherri Shepherd had a laugh over it.

Anyways, the criticism is clearly doing a number on Sean, and he posed a laundry list of questions. "As I continue to reflect on the commercial, I consider these thoughts: Why are people creating so many additional narratives to the story? Am I allowed to view the commercial positively after receiving such negative feedback? If recognized on the street, what will people’s first opinions be of me?"

He also wonders if his "wife" in the ad is going through the same thing he is. For what it's worth, she's chosen to remain silent since all the buzz over the ad.

Guess Sean ain't buying Peloton's company line that folks actually like the ad.

Sherri Shepherd has some advice for hubbies looking to whip their wives in shape for the holidays with the help of a new Peloton -- go for diamond earrings instead, pal.

We talked to the comedian Tuesday night about Peloton's new severely mocked ad -- in which a wife documents the highs and lows of her fitness journey a year after her husband gifted her the workout bike for Xmas. It's hilariously awkward.

Sherri's take on the spot -- that might be why she's single. She mockingly said who wouldn't love a bike instead of diamonds and jewelry. Sherri added, she wishes a future husband would buy her a Peloton ... but you have to see HOW she says it.

If you haven't heard the criticism so far, the general idea is that this fake TV husband is pretty freakin' tone-deaf with his gift. As for the wife ... well, people think she's not all there either with how gung-ho she seems to be about the suggestive surprise.

The criticism has hurt the company's bottom-line too -- its stock price dropped about 6 percent on Tuesday.

Sherri's got a hilarious explanation about why husbands should accept their significant others for who they are. Fellas, before you order that bike ... at least listen to her take. Could save ya in the long run.

Kevin Hart is hard at work on the road to full recovery, and it looks like he's diving back into a gym routine that looks grueling for someone who nearly died in a car crash.

The actor-comedian posted a video of himself working out in what appears to be his home gym with a personal trainer -- seemingly someone from this fitness/wellness company called VitaHustle ... which KH was happy to plug on his social media page.

In his post, Kevin made a point to say that he was trying to not only get back to tip-top shape ... but actually become better than he was before. He also said he was trying to achieve these new levels of fitness for himself, and not anybody else ... including fans.

He added, "I want to inspire & motivate people to challenge themselves to be great. We all have greatness within...it’s up to us to tap into it. Nobody knows what your are capable of more than YOU. I can’t wait to show ME the new levels that we are about to reach!!!!"

As for what exercises Kevin is partaking in these days ... one-legged dumbbell curls and shoulder presses, exercise ball planks, loose strap lat pulls, dumbbell squats, dumbbell single-arm rows and more. Pretty reminiscent of what he posted just last month, actually.

What's crazy is that as tough as this workout of his looks, he's actually told us that it's not really at the peak of his usual fitness levels or what he was even used to pre-crash.

Tyler Cameron is living proof that no matter how in shape you might be ... a marathon can still kick your ass.

Gigi Hadid and Hannah Brown's ex-lover was among 50,000 people or so to run the New York City Marathon Sunday -- and probably among half who cramped up along the way. TMZ got this video of the model limping his way to one of the barricades in clear pain.

We're told this was shot about midway through the 26.2-mile trek throughout the city. Looks like Tyler's leg might've given out on him ... it happens, marathons are brutal.

Now here's the kicker ... Tyler ended up finishing the race, and in pretty good time too!!! We searched him on the official New York Road Runners' tracking system, and it looks like TC topped out at 4 hours, 39 minutes and 54 seconds -- an average of 10:40 minutes a mile.

Tyler was on a good 9-11 minute/mile pace until about mile 19, when he clocked in 13:39 -- and then dipping again at mile 22 at about 15:40. He picked it up at the end though, finishing mile 26 with an average speed of 11:08. Cramps be damned, he toughed it out.

Oddly enough, the guy hasn't posted a celebratory photo or vid of himself getting across the finish line ... even though he put up a before-photo. Modest much???

Glen "Big Baby" Davis says Zion Williamson needs to lose weight ASAP ... 'cause he tells TMZ Sports being the same size as the Pelicans star cost him his NBA career!

"That’s one of the reasons why I stopped playing was because of my weight," Glen says.

Davis says he was just too damn heavy during his playing days at around 289 pounds ... and blames the weight for 2015 ankle and foot issues that ultimately ended his NBA career.

Now, he's sending a warning to Zion -- who's listed height and weight (6'7", 285) is nearly identical to Davis' when he was playing -- saying Williamson's gotta drop some pounds.

"He has to get his weight under control," Glen says.

Zion is apparently already feeling the effects of being too big ... he's missing the first few weeks of New Orleans' season with a knee injury that some are sayin' happened because of his size.

The good news for Williamson? Davis says Zion is going to be just fine as soon as he gets down to a weight his body can truly support consistently.

"He might have to lose some muscle mass, but other that, he should be OK."

By the way, we also showed Davis the rumored new Celtics' alternate uniforms ... and ya gotta hear him hilariously crap all over the threads!!!