Common sense and your mother have always told you to come in out of the rain.

But, making a dash for a dry place doesn't keep you much drier than walking at a normal pace, says Discover magazine.A person running at 22.4 miles per hour gets only 10 percent less wet than a hasty stroller, sauntering along at 6.7 mph. The extra speed scoops up a lot of extra raindrops that you would miss if you were just walking. The benefit you get from speed doesn't justify the extra energy used and so you might as well walk.