Tens of thousands of readers have joined The Wall Street Journal Workout Challenge. Haven’t signed up yet? No problem. The five-week program is free for all readers and you can start the challenge at ...

Usain Bolt smashed the 100-metre sprint record at the 2009 World Championships in Athletics in Berlin in a floodlit stadium under an inky night sky. This article is part of a series on fitness that ...

I’ve been training clients for almost two decades now, and I’ve noticed a pattern. I can get a pretty good idea of who will stick to their workout program and who won’t, based on their answer to one ...

Sabrena Jo, Ph.D., senior director of science and research at the American Council on Exercise, has decades of experience helping people find ways to become physically active. From working one-on-one ...