Huh. The way we walk now, heel-to-toe, is a fairly recent thing historically. And this was due to footwear.
Medieval persons wanted to protect their Manolo Blahniks from excessive wear. JUST KIDDING. They were trying not to walk out of their shoes – which were really just foot wrappings.
Dig this. There’s an outdoor MUSEUM (History Park Bärnau) dedicated to the study and reenactment of life in earlier civilization and you can observe the reasons and the how of how we used to walk.
For some reason I find this incredibly funny. This guy is awesome. AND this is not his only lecture. YouTube rabbit hole anyone?