AI fitness instructors, Rosalia, Brazilian jiu jitsu

A BBC investigation has uncovered misleading fitness adverts featuring AI‑generated characters that breach UK advertising rules. If you use social media you've probably seen them: polished fitness videos promising dramatic body transformations in weeks. They show chiselled physiques, striking before‑and‑after images and claims that you can look years younger by following a simple routine. The results often look too good to be true and in many cases, they are. Anita Rani is joined by Katie Gornall, BBC Sport Correspondent to …