Well from past experience, I
Well from past experience, I do believe I have the answer. If you have been wearing foot coffins long enough you'll have no toe strength. When I went on vacation over a year ago, after having just recently begun barefooting/minimal shoe wearing, and walked the beach, my toes kept getting bent back... painfully, because my toes could not hold position as I followed through each step. I told my wife about it and she said that happens until you build up some strength. Who knew? When I was a small kid I never had that problem, but then again, I was barefoot a LOT more then. Of course in shoes this is not a problem since the toes never get involved and you can force through the sand regardless. Still, it is a shame.