You might think running is only for the young—but research reveals a very different and encouraging reality.

It's time now for our science news roundup from Short Wave, NPR's science podcast. I'm joined by two of the show's reporters, Regina Barber and Rachel Carlson. Hey, y'all. REGINA BARBER, BYLINE: Hi.

Add Yahoo as a preferred source to see more of our stories on Google. WHEN I FIRST started running long distances, I had one goal: go as fast as I could for as long as I could. I ran the same 5k route ...