In one TikTok video, footage of a thin woman in a one-piece bathing suit transitions to a video of the same woman now proudly displaying her buns of steel in a thongkini: "POV: you traded Pilates for ...

Reformer Pilates is the low-impact workout beloved by celebs including Hailey Bieber and Meghan Markle. But why exactly has it become the insider-favorite body sculpting class? Laura Quinn, head ...