Where lie the country's steepest, most muscle-shredding streets?
New research suggests a 20-minute walk a day could keep people much healthier.
These graphics chart the most popular routes in 22 cities.
Whether you're physically fit can depend on where you live.
For people who can't stop cycling.
We've made it harder than ever for kids to walk, bike or even play outside and the consequences are dire.
Thirty can win you one free subway ticket.
Moves tracks daily walking, bike riding, running without any input from the user at all.
Denver and Santa Monica are cracking down on fitness classes in public spaces.
Public parks in upper-income, predominantly-white communities in Kansas City were more likely to have playgrounds, water features and trails.
Riding a bike may have special benefits that other exercise modes don’t, but we just don't know enough about it.
The metros that offer you the best chance of shedding those extra pounds.
Is this Jackie Chan's long-lost grandfather?
Turning this public park staple into a personal gym.