What is drafting?
At air speeds of over 10mph a rider creates a volume of lower density air behind himself. If you get into this lower density volume of air, then you don’t have to push through the “wind”. In other words… At speed, if you get right behind another person you will be out of the wind; or sheltered from it. If you move to one side or the other (from directly behind the person) you’ll encounter the normal strong smooth flow of air. As you move back behind the person, the air will be turbulent but not as strong. This can make it easier to pedal. And this is why you see everyone in a group so close together. Also it is why a group of even two riders is much faster than a single rider. The person in the back can rest a bit and the pair can take turns at the front.
