i am here with celebrity trainer chalene johnson at one of the most popular fitness clubs in southern california to find out what's made her amazing piyo workout the hottest thing to hit the gym in years. >> are you ready? here we go. we're gonna start quick. >> it's like everything rolled into one. it's pilates, it's yoga, it's your cardio, it's your flexibility, it's your strength training all in one workout. in traditional pilates, you would see just this little teeny tiny movement, which is great if you're just trying to strengthen little tiny muscles in the hip, but most people want a full-body workout. look at how that works your abs, your arms, your core. in a traditional warrior pose in a traditional yoga class, you'd probably hold that pose, whereas in piyo, they're never just holding the pose. as you can see, jen here is going up and down. it's just working every part of her body -- the glutes, the that builds muscle and that burns calories. >> since i've been doing piyo, i've lost 25 pounds, 30 inches, and i feel amazing. >> i have lost 25 pounds and 20 inches. thank god fo

a new low-impact weight-loss and body-sculpting miracle from fitness and nutrition sensation chalene johnson that takes the best of pilates, the best of yoga, and fuses them together into one incredible program. >> i've combined the best of pilates and yoga to give you flat abs and a sculpted body and flexibility but with sequences that deliver a fat-burning cardio workout at the same time. >> i'm actually in better shape and smaller now than i was before i got pregnant. >> you just don't expect to have a six-pack after children. i have a six-pack at 40. >> announcer: and were going to show you just how something as low-impact and fun as piyo has quickly become the latest phenomenon from the biggest name in fitness, beachbody, the company behind p90x, insanity, and the 21-day fix. and today, chalene joins maria menounos, the ultimate authority of what's hot in hollywood, to share incredible stories from people who changed >> i've lost 40 pounds and 5 full dress sizes. [ applause ] >> announcer: and how some people even used this low-impact miracle to completely change their lives. >> i have

a new low-impact weight-loss and body-sculpting miracle from fitness and nutrition sensation chalene johnson that takes the best of pilates, the best of yoga, and fuses them together into one incredible program. >> i've combined the best of pilates and yoga to give you flat abs and a sculpted body and flexibility but with sequences that deliver a fat-burning cardio workout at the same time. >> i'm actually in better shape and smaller now than i was before i got pregnant. >> you just don't expect to have a six-pack after children. i have a six-pack at 40. >> announcer: and were going to show you just how something as low-impact and fun as piyo has quickly become the latest phenomenon from the biggest name in fitness, beachbody, the company behind p90x, insanity, and the 21-day fix. and today, chalene joins maria menounos, the ultimate authority of what's hot in stories from people who changed their bodies thanks to piyo. >> i've lost 40 pounds and 5 full dress sizes. [ applause ] >> announcer: and how some people even used this low-impact miracle to completely change their lives. >> i have lo

a new low-impact weight-loss and body-sculpting miracle from fitness and nutrition sensation chalene johnson that takes the best of pilates, the best of yoga, and fuses them together into one incredible program. >> i've combined the best of pilates and yoga to give you flat abs and a sculpted body and flexibility but with sequences that deliver a fat-burning cardio workout at the same time. >> i'm actually in better shape and smaller now than i was beforeot