Spin Class - Anaerobic Workout!

We usually warm up for few minutes, but coach Peggy said to go ahead and spin and warm up our legs for about 10 minutes. Ok, why is she being so easy on us? Something is up! Yup, she said that tonight's workout would be an anaerobic one! What does that mean? It means, "without oxygen"! Enough said! I am still trying to catch my breath! Last spin class next week! Yippeee!!!!!