- aerobic fitness, biomechanics, lactic acid, and energy supply - but also less familiar things such as power output and gravitational force. Most important, there's the je ne sais quoi that separates the champs from the chaff.The best runners are incredible
used to provide energy, burn dietary carbohydrates, produce blood glucose and liver glycogen, and promote survival in stressful situations."Brooks calls all these goings-on the "lactate shuttle" or "lactate transport system." What he’s saying
