I do this when I'm walking around the house (no shoes allowed), partly because my heels eventually hurt when walking on hard surfaces with no padding, but mostl

I do this when I'm walking around the house (no shoes allowed), partly because my heels eventually hurt when walking on hard surfaces with no padding, but mostly so I avoid treading on a lego brick or a type G (UK) power plug (though this is the first time I've thought about it, so these are assumptions). I also run on the balls of my feet, but I never thought about why I might do that until I read an article about it a few years back.