At some point in every runners' career they experience the "perfect" run. If you're one of the lucky few, it happens on a regular basis. Everything seems to just click. Your worries about the day and physical aches and pains melt away. Your body and mind are in complete sync and the run feels effortless. It is this elusive experience that motivates us to continue running as we chase that feeling again and again. Research shows that not only do runners enjoy running more when they enter that higher-level st