Not only does a Spin class benefit your muscles - everything from your legs to your core - but it's also a great low-impact cardiovascular workout, which improves your blood flow, increases your stamina, boosts your mood, and prevents against chronic issues such as high blood pressure, heart disease, stroke, and diabetes. This session is fast paced and intense - in a good way! With that in mind, it's not a bad idea to build up your cycling fitness a bit before you hop into a class. Nothing crazy here, just take some time during your next few workouts at the gym to hop on a stationary bike and get the feeling down.