With a power meter, you always have an overview of the power you are putting out on your bike. Your watt values are taken either from the pedal or the crank and shown on the display of your bike computer. So you always know exactly in what power level you are at the moment, whether your training is effective or whether you are overshooting the target. Being too fast at the beginning of the climb and the subsequent drop in performance are now a thing of the past. With a power meter you have the best opportunity to measure your progress and fatigue on every ride.