Focus Your Efforts with Heart Rate Zone Training

Perhaps this post could be called an ode to the heart rate monitor, my favorite training tool. It gives instant feedback and lets me know how hard I'm truly training, based on my cardiac output. If you're a gym-goer you've probably jumped on a cardio machine and seen this familiar sticker or one of its familiar variations. Why so complicated, cardiovascular machines? I'll explain why one (heart rate) zone doesn't fit all because we all have different training goals.