The Healthy @Reader's Digest on MSN

Intensity vs. Amount: This Type of Workout Is More Likely To Lengthen Lifespan, Found Recent Study

Is it just showing up, or how hard you muscle it out? Sports science research studying American adults is proposing an answer ...
The Economist

Can high-intensity interval training get you fit in a hurry?

There may, however, be a shortcut. High-intensity interval training ( HIIT) promises to get you fit with just a few minutes ...