The Science of Evolutionary Biology

Hill sprints, along with jumping, acceleration work, morbalistic activities are power amplification. Psychical running is more of a metabolic economy activity where the body comes down from the air, it loads the tendon, and then the body projects again. Neanerthals went out of business because they were about power amp ation versus more or dominant mode of transport for necessities. To propagate as a species was about energy conservation. And that's why we've developed and evolved to become very efficient bi pedal organisms.