Is Heel Strike Running Bad for Performance?

High impact running comes at an economical cost. By impact standards, heel strike running is a significantly more force-intensive style of running than forefoot running where according to some research high impact requires more vigorous muscle tuning response to attenuate shock ~a process that requires energy. Simply put, high impacts (like in heel strike running) drains energy from the system whereas stark decreases in impact (like in forefoot running) enhances running economy.