Studio SWEAT onDEMAND offers spin classes, TRX, yoga, and full-body workout guides. Now that you have a better understanding of what spin classes are, let’s take a look at the best online spin classes you can find! While you may not get the full effect of a crowded room from your own home, you can still get the best workouts that a class can provide! Most classes will have dim lights, loud music, and exciting coaching. People love spin classes for the exciting atmosphere they provide. While you could theoretically use almost any kind of exercise bike for a spin class, they’re typically designed for using a bike with a weighted flywheel to mimic outdoor cycling. These fitness classes have you cycle at a high intensity using a stationary exercise bike. CardioCast’s Noël Nocciolo – 30-Minute Rideīefore we move forward with our list, we’ll give you a quick rundown of what a spin class is!.