Your running body is like a car engine. Put bad fuel in and it performs poorly. Eat good food! Provide your engine with the best possible fuel, and you will optimize performance.
Foot placement at impact, is less about heel striking vs. forefoot striking, and much more about where your foot is relative to your center of gravity.
@stevemagness Secondly, those gifted kids of poor parents are more successful in life, despite these alleged, lower college rates. Since intelligence is the single most correlative trait to success, socioeconomic family history, must play a secondary influence. The statistics bear this out.