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# Is it better to walk or run in the rain?

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On those cold, rainy days when you forget your rain jacket or umbrella and you want to stay as dry as possible… should you walk or run? Minutephysics explores the age-old question of which will keep you drier.

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When you’re caught in a downpour with no umbrella, should you run or walk? Running will get you out of the rain faster, but at the risk of encountering more drops along the way — and therein lies the dilemma. Now, science gives the go-ahead: in most cases, run.

In the European Journal of Physics, Franco Bocci has shown that the optimal travel speed varies depending on how thin you are, the wind speed, raindrop size and the angle between your path and the wind direction. Certain combinations of these factors set an optimal travel speed, which may occasionally be slower than a flat-out sprint.

If the wind is blowing in the direction you’re traveling, attempt to jog at a speed equal to the wind speed. That’s the pace at which you feel the least wind (and rain) smacking against you. If the wind is hitting your back at an angle, jog a little faster than you think it’s blowing. (The larger the angle, the more you should hustle.)

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03/18/2019 •
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## About TED-Ed Best of Web

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