If I have nothing on my feet, I toe-walk so as not to endure the jarring sensation of my heels striking the floor or ground.
I come down on the balls of my feet - that "knuckle" just behind the toes - and rock forward. My dad called it "being sneaky". My wife just thinks it's cute.
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.