Can You Get Fit in Six Minutes a Week?

A fascinating study reported on in the Well Blog, examining how short bursts of intense activity can have as much of a physical health improvement (by some measures) as long activity.

I thought it interesting what they said about running:

There’s a catch, though. Those six minutes, if they’re to be effective, must hurt. “We describe it as an ‘all-out’ effort,” Gibala says. You’ll be straying “well out of your comfort zone.” That level of discomfort makes some activities better-suited to intense training than others. “We haven’t studied runners,” Gibala says. The pounding involved in repeated sprinting could lead to injuries, depending on a runner’s experience and stride mechanics. But cycling and swimming work well. [emphasis mine]