The owner of M2 Core + came to the fitness industry through necessity, as she struggles with scoliosis. By leading the studio's Megaformer workouts, though, she's so far kept her core stomach and back muscles strong; thus, helping to keep her condition under control. The person she has to thank for all this? Sebastian Lagree.

Lagree is the fitness titan who invented the aptly named Lagree Method, a full-body conditioning regimen that promotes fat-burning without resulting in bulky muscle. Thanks to the workout style's wealth of drills and modifications, the routines can be adapted for exercisers of all abilities and those with back and knee injuries, as well. It's the linchpin of M2 Core +'s workouts, and is backed by the Megaformers—the custom-weighted resistance equipment students sweat on. To boost motivation, the team plays high-octane songs during workouts, rather than just singing "Happy Birthday (to Muscles)" throughout each class.