4 Mirror alternatives if you miss working out with a personal trainer You don't need a treadmill to create your own home fitness studio. FacebookTwitterEmail 2of14 5of14 7of14 13of14 14of14 With home workouts still being a major part of 2021, finding the right one is key to staying fit. The Mirror, Lululemon's foray into exercise devices, is literally what the name says: A mirror, but one that doubles as a home fitness studio by displaying cardio, boxing HIIT and yoga classes. Its minimalist design won't take up much space, and its fans are many. But the Mirror isn't the only mirror-like home fitness studio on the market.