Sand is difficult to walk or run across. But why?
For some people, nothing beats a long walk on a sandy beach. But there's no denying that it's not as easy or as fast to get around on the beach as it is on a road or a sidewalk. But why is it so hard to walk on sand?
But it's not just that sand deforms when you step on it; the unevenness of beaches and sandy dunes also makes them tricky to move across."On sand, the base of support is also irregular, and to move on irregular terrain requires additional energy," Zamparo said. This forces your body to make small, often subconscious adjustments to your gait, engaging muscles — especially in the ankle and foot – that might otherwise get more rest.
But as experienced beach walkers know, there's a way to make it easier to walk on sand: Just add water. If water isn't an option, there is another way to make traversing sand easier:"Increase your surface area," Grant told Live Science. This could be accomplished by wearing shoes or changing your gait, landing more flat-footed than you might otherwise.
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