Michael B. Jordan shared a throwback behind-the-scenes shot in November 2018 of him and Sylvester Stallone working out at Philadelphia, PA, USA’s Front Street Gym and said, “It’s hella dope and surreal to me that I’m hitting the speed bag with Rocky, like y’all that’s really ROCKY! Lol. I grew up watching and mimicking all of the Rocky films and boxing matches.”

A shirtless Austin Mahone said it was “shred season” when he worked out at Venice, Los Angeles, CA, USA’s JFM Boxing Club in October 2018.

“This is 37 + the I’m just getting started” is what Monique Coleman said when she worked out at New York City, NY, USA’s Bout Fight Club boxing gym in August 2018.

Mario Lopez worked out at Los Angeles, CA, USA’s Wild Card Boxing in May 2018.

Throwing punches at Trinity Boxing Club, Los Angeles in February 2018 was “Workout two of the day” for Angela Simmons.

Ellie Goulding said she’s “Always learning” when she was inside the ring at Overthrow Boxing Club, New York in November 2017.

Camilla Belle “Let off some steam” at CruBox on a “#workoutwednesday” in September 2017.

David Beckham watched as “Brothers” Romeo Beckham and Cruz Beckham boxed each other in September 2017.

Timbaland stepped into the ring at Punch Boxing for Fitness with “the man that keeps me on point” — trainer Jake Brutal Bostwick — in August 2017.

Candace Cameron Bure worked out at BoxUnion in July 2017 and said, “So exhausted! So fun but SO hard!”

In June 2017, Angela Simmons was back in the ring here and shared, “I really love boxing . . . have been doing this for a while . . . It’s so fun to me . . . I get so mad while boxing if I miss something lol.”

Katharine McPhee was “Sweating buckets” while working out with Cuba Gooding Jr. at Friday Night Fights Gym in June 2017.

Floyd Mayweather trained at Ten Goose Boxing Gym in June 2017 and shared, “I’ve been getting my hands wrapped since 1987 and hands down… he is THE BEST!!!”

“Let’s go” is what Ashley Benson said when she was ready to rumble here in June 2017.

Jourdan Dunn said she was “Thirsty” mid-workout here in June 2017.

Adriana Lima worked out at “The original and one & only” Gleasons’s Gym in May 2017.

Bella Hadid snapped a mirror shot during her “@gothamgym at home” workout in April 2017.

Nina Dobrev put up her dukes to pose for a group shot with Jessica Szohr and Lauren Parsekian by the “FIGHT FOR IT” mural in April 2017.

In April 2017, New Kids on the Block’s Danny Wood hit a punching bag here and said he was “in the best shape of my life.”

Jessica Szohr went to 9Round Fitness, Germantown in April 2017 and said, “My early workout was tough…but thankful I did it . . . my Uncle Brian runs a tight ship over there in Germantown!”

Carly Rae Jepsen took her “first boxing class” at City of Angels Boxing in March 2017 and said, “now I might be hooked (even though I feel like a cooked spaghetti noodle).”

Khloe Kardashian got in “A little NYE workout” at Body & Soul Miami in December 2016, saying, “Had to break a quick sweat to get ready for tonight’s festivities!”

Skylar Astin shared a shot in November 2016 from his “Last round Saturday Mitt Flow” here.

Casper Smart had his game face on when he worked out here in October 2016.

Joe Jonas did some sparring “with coach” at UFC Gym, Las Vegas, Blue Diamond in August 2016.

Jessica Alba said she and her friends “Got our sweat on” at Church Street Boxing Gym in June 2016.

Monique Coleman endured a “Killer boxing workout” at The Boxing District in February 2016.

Casper Smart did some sparring at Mendez Boxing in October 2015.

Madonna said Downtown Boxing Gym Youth Program “is the place to be!! in September 2015 when she stopped by for an inspiring visit.

Ludacris went by the ring at Mayweather Boxing Club in September 2016.

Minka Kelly put her dukes up to thank the New Orleans Boxing Club “for a great Sunday workout” in May 2015.