Watch: See Kane Brown's Jaw-Dropping Fitness Transformation!Kane Brown is puttin' some miles on his treadmill. Indeed, the "Backseat Driver" singer offered another look at his health journey, showcasing his five-month progress while teasing more to come. "From April - August," Kane wrote on his Aug. 16 Instagram post, which shows how much he's sculpted his upper body over the summer, "and we just getting started!" And the 31-year-old-who shares kids Kingsley Rose, 5, Kodi Jane, 3, and Krewe Allen, 14 months, with wife Katelyn Brown-isn't the only one who's proud of his impressive progress. In fact, fellow country star Chris Lane gave Kane his flowers in the comment section, writing, "That's insane, teach me your ways buddy." photosKane Brown's Most Adorable Dad MomentsTaylor Lautner also chimed in with his support, commenting, "Dude, what are talkinggg about." And when singer Bailey Zimmerman called Kane's transformation "inspiring," the "Miles on It" artist revealed the secret that's helped him build his strength over the last three months: "I'm in there everyday the doors open!" And when Kane isn't detailing his fitness transformation, he's inspiring his two daughters to stay active. "Make sure you subscribe," he captioned the July 22 post, which sees his eldest kids running a race with their dad in the gym, "and leave a thumbs up for keeping up with Kingsley and Kodi." Instagram/@kanebrownKane's encouragement doesn't stop at his family, as he also motivated his fans to join him on his fitness journey. In fact, one month into prioritizing his new routine, he revealed how much he defined his physique-specifically, his abs-in that short time frame. "From April 1st on the left until today (right)," he captioned the side-by-side picture, "I've been super dedicated to fitness and health. "I would love others to come on this journey with me." Keep reading to see more stars who've shared insight into their fitness regimens...TLCTammy SlatonTammy Slaton may be a star of TLC's 1,000-Lb. Sisters, but she didn't want to be beholden to that title forever. "I'm down 500 pounds now, around 500," the 38-year-old said in a confessional on an April 2025 episode of her show. "When I was at my heaviest, I was 700-plus pounds. Right now, I'm weighing in at 238." She underwent bariatric surgery in 2022, a choice her physician has praised as the right one for her. "Tammy has consistently demonstrated her dedication to making sustainable lifestyle changes to maximize the benefits of her surgery," Dr. Eric Smith told People in October 2024. "I've emphasized the importance of making small, daily adjustments to ensure not only her continued progress but also her long-term success. She's truly committed to her health journey."Erika Goldring/Getty Images, Taylor Hill/FilmMagicJelly RollIt seems as if every time Jelly Roll hits a red carpet, he's down a sizable slice of weight. "I started at 540 pounds and I was 357 pounds this morning," the singer born Jason DeFord told Pat McAfee in April 2025 during the ESPN host's Big Night Aht live show. "I'm gonna lose another 100 pounds and go skydiving with my wife in Sweden, baby!" The 6-foot-1 artist admittedly needed to overhaul his relationship with food to get where he wanted to go. "I've always said that I believe obesity is directly connected to mental health," he explained on an October 2024 episode of On Purpose With Jay Shetty. "I know how easy it is for people to go, 'Just quit eatin' so much, just work out, it's so easy!' I wish I looked at food that way." Weight was still "the mountain" in front of him, Jelly Roll noted, but his lifestyle changes were working. "I'm learning, I'm being very diligent with it," he said. "I'm taking it serious, I'm drinking a bunch of water, I'm cold plunging, I'm eating right, I'm doing good."Nick Elgar/Getty Images, Jason Davis/Getty Images for Bentonville Film FestivalAl RokerAl Roker wasn't kidding around with the title of his cookbook Recipes to Live By. Because having lost a hard-fought 100 pounds, the longtime TODAY weatherman literally walks the walk (aiming for at least 10,000 steps a day), watching what he eats and fitting in some sort of exercise on a daily basis. "My mantra is 'something is better than nothing,'" he told People in a June 2025 interview. "Maybe you'll be running marathons or entering weight-lifting contests, but I think most people just want a level of fitness that improves their quality of life." Roker underwent gastric bypass surgery in 2002 to get his fitness journey underway, but, he acknowledged, "There's no magic bullet." Surgery is "not the end," he advised. "You're still going to have to put in the work." Mitchell Leff/Getty Images, Christopher Polk/Variety via Getty ImagesJason KelceWhile previously known for the tush push, former Philadelphia Eagles center Jason Kelce has been busy showing off his buff bod. Not that the athlete wasn't in fighting shape during his 13-year career in the NFL, but he's down at least 25