Heel strike running is bad because multiple lines of research over the last few decades have proved the many verifiable aspects of heel strike running that are primarily responsible for nearly all running injuries vs forefoot running.
Why Heel Strike Running is So Bad for Your Legs
One of the many reasons why heel striking is bad for running is that its the only cause of a painful lower leg condition called chronic compartment exertional compartment sydrnome. This condition is literally cured by landing with a forefoot strike when running!
