Mirror is the latest fitness craze. It’s a unique exercise apparatus that allows you to focus on your reflection and the instructor at the same time. It's like having the best spot in the class with ...

As I adjusted the settings on my bike before a spin class got under way recently, one sports-bra-wearing rider nearby was busy moving her bike so she could have a direct view into the mirror. Nope, ...

A mother and daughter's realization of the different reflection produced by a mirror, despite a visible item not being in front of the mirror, has left the internet confused. In a viral video, the ...

This is an installment of Good Fit, a column about exercise. At Form Fitness, in Brooklyn, you’ll find an assortment of squat racks, dumbbells, and pull-up bars—which is to say, it’s a typical gym.