Buying an exercise bike? An exercise bike is an excellent way to build fitness, lose weight and get fit. But how do you choose the best one? This buying guide will show you exactly what to look for when shopping so you can find the very best exercise bike for your needs! First, ask yourself which class of exercise bike you would like. There are 2 general classes of exercise bikes: 1) Recumbent Bikes unerect bikes are the newer exercise bikes on the market with the chair-like or bucket seats. Your body is placed in a semi reclining position and your legs angle out in front of you to reach the pedals instead of hanging down as on an semi-erect bike.