Authors:

It's a question of spreading the available energy, aerobic and anaerobic, evenly over four minutes. If you run one part too fast, you pay a price. If you run another part more slowly your overall time is slower.

"Breaking the Four-Minute Mile". The Academy of Achievement Interview in Dublin, Ireland, www.achievement.org. June 7, 2002.
It's a question of spreading the available energy, aerobic and anaerobic, evenly over four minutes. If you run one part too fast, you pay a price. If you run another part more slowly your overall time is slower.