Challenges

Japanese Walking: The Viral Trend That's Actually Backed by 20 Years of Science

Japanese walking (interval walking training) alternates 3 minutes brisk with 3 minutes slow. Here's the real science - aerobic capacity, strength and blood pressure gains - and how to start.

Couch to 5K: How to Start Running (and Why Your Body Will Thank You)

Couch to 5K takes total beginners from the sofa to a 5km run in 9 weeks. Here's how the run/walk method works, the science on running's benefits, and how to start without getting hurt.