Cardio, schmardio. For the ultimate body and mind workout, some harried adults are pirouetting back in time — and signing themselves up for ballet class. Whether it’s curious first-timers looking to ...

When I signed up for my first adult ballet class in my 30s, I expected my technique to be rusty, but I didn’t expect to be totally stumped by what to wear. As a kid, my ballet school had a strict ...