Featured in runners

Why do my muscles ache the day after a big workout?
What running ultramarathons and giving birth tell us about the limits of human endurance
Nike put its energy-returning foam into a shoe you can train in
A six pack won’t make you a better runner, but these deep core exercises might
When you get a stitch in your side, what’s really going on?
Video: Motivating Robot Follows You on Your Morning Run
Gear to Help Long-Distance Runners Get Into Shape
Japanese Robots Will Run In First-Ever Full-Length Robot Marathon
Power-Harvesting Prosthetic Uses Every Footstep to Power the Next
Long-Awaited Barefoot Running Study Finds Sneakers Are Harmful