That link refers to a 90 minute daily workout. For a point of comparison, 90 minutes per day would not be considered abnormal for a "fit" amateur (as in, the pe

That link refers to a 90 minute daily workout. For a point of comparison, 90 minutes per day would not be considered abnormal for a "fit" amateur (as in, the person in your office who is training for a marathon, iron man, crossfit games, etc.). It is not at all what most athletes would consider serious training.