Walk or Run in the Rain?

If you were out there caught in the rain, will you run or walk to the nearest shelter?

Watched Mythbuster and they proved that walking will save you more from getting drenched.
I remembered that Granny Weatherwax said that too. You should in fact walk upright and not run to minimise the surface area exposed to the rain.

So, the next time you see me talking a stroll in the rain, it is just to keep myself drier.