High-endurance spinning classes start with your super-jazzed instructor letting you know (read: yelling) when to do what – from pedaling standing or sitting down, pedaling faster or much faster (we said high-endurance) and increasing and lowering your resistance levels. Don’t get discouraged if you can’t keep up the first time, or even the second, or third. Spinning is all about building endurance, and it can be customized to fit any fitness level. Do you like loud music? High-endurance workouts? Group classes? Burning 400-550 calories in 45 minutes? If you answered yes, then you should definitely check out your local spin class. While the initial idea of Spinning workouts can worry even the most hardcore of fitness buffs, once you get the hang of it, it is bound to become your new obsession.