There are few pains worse than stepping on a Lego. Non-fatal ones, at least. It hurts. A lot. But why does it hurt so much?

It's a combination of biology and physics. The tissue on the bottom of your foot is filled with nerve endings – rightly so, given that we want to know if our feet our in danger, and pain receptors are the way to do that. So when it hurts there, it hurts a lot.

Then there's the Lego brick. It's so solidly constructed. Quartz says, that it would take 950 lbs. of stacked Legos before even one of the bricks would begin to crack. Those little blocks are durable and they have very little give. Add in some sharp corners and it's a recipe for a lot of pain.

Now you know the science behind your agony. This probably won't prevent your kid from leaving Legos all over the floor, though, no matter how decent a science educator you are.

Source: Quartz

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