A $20 Billion dollar industry based on nothing but empty promises and wishful thinking. Slice off the top of a 70's running shoe, and you had a sandal : the old Addidas and Onitsuka Tigers were just a flat sole and laces, with no motion control, no arch support, no heel pad. The guys in the 70's didn't know enough to worry about pronation and supination; that fancy running-store jargon hadn't been inveted yet. I log a fair number of miles but haven't bought a pair of running shoes in 3 years. With all the supposed advancements in running shoes why are the injury rates higher now than ever? You don't need to change your shoes every 500kms etc....I have some that have close to 2,000kms on them.
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