“Develop long, lean muscles without bulk.” “Sculpt a ballerina’s body.” “Enhance flexibility and improve balance.” Many say that after only five classes, you’ll see changes in your body, gain strength, and tone those hard-to-target muscles in your core, arms, and legs. And the best part: Anyone—no matter their age, weight, or fitness level—can hit the bar and get results. With claims like these, who wouldn’t want to plié their way to a stronger body?

As with anything that sounds too good to be true, we had to investigate. Here, we dig into the science behind the the ballet-inspired workout to find out exactly how (and if) it can actually transform your physique.