Jewel is feeling like a "Stronger Woman" - and her fitness transformation proves it. The singer, 51, showed off her incredibly sculpted figure in a bathroom mirror selfie posted via Instagram Stories on Tuesday, September 16, crediting weight-lifting and more for her toned look. Jewel proudly put her gains on display while posing for the photo in a black swimsuit, flashing a smile for the camera while flexing her biceps. "Summer recap : more travel, more lifting (because , 51 and gotta keep that muscle and bone up) more time with family and loved ones, more painting ... more adventure, more joy," she captioned a series of pics, also including a beaming bikini-clad shot that flaunted her physique. Courtesy of Jewel/Instagram Fans were blown away by her figure and pleaded for workout tips in the comments. "Omg! Look at your legs! What are you doing? I want legs like that! ," one person wrote, to which she replied with some of her fitness secrets, revealing she did a "mix of an old 1980's Calenetics work out (anyone else have the vhs tape as a kid?!) hot yoga, hiking and lifting." Hollywood's Fitness Trainers Spill Their A-List Clients' Workout Secrets "I'm sure I'm asking for all of us women in this age range... can you drop your workout/nutrition routine? " another fan commented, leading Jewel to share details about her dietary regimen. The songwriter said she incorporates healthy fats, proteins, organic greens and heirloom grains. "And cheese puffs if I stay up too late ," she playfully added. Courtesy of Jewel/Instagram "Work out: I mix it up!" she continued. "Pilates, hot yoga, difficult [vertical] hikes , weights ... been working on it because the stats for women our age really need to get after now!" Jewel previously spoke out about her rise to fame in an exclusive interview with Us Weekly, revealing that she always prioritized her well-being and initially turned to music to cope with her struggles. Jewel's Dating History: From Sean Penn to Kevin Costner "When I was discovered, my No. 1 goal wasn't to be a musician," she told Us in October 2024. "It was to make sure that I could learn how to be, I called it a happy, whole human instead of a human full of holes." She continued, "I never wanted my mental health to be the price I paid for my career. And as we're seeing with so many celebrities and artists, we're losing too many people. This job is a difficult job, but so many jobs are, we have a lot of pressure that we're dealing with in the world."