Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. I’ve discovered the ultimate, ...

Most solid training plans include a weekly speed workout, often in the form of intervals. But the length of those intervals usually depends on your race distance, training goals, and fitness level.

Please provide your email address to receive an email when new articles are posted on . Short-interval high-intensity exercise improved peak VO 2 more vs. moderate-intensity training after stroke. A ...

TOOLBOX: Interval Training is popular in cycling and many other sports. High-Intensity Interval Training (HIIT) involves short periods of hard efforts separated by low-intensity recoveries. Let’s dig ...

Not all intervals are created equal, even if the average wattage is kept similar. Making intervals that vary in intensity can make them really different from constant wattage intervals. Tough short ...

The 5-4-3-2-1 Walking Pyramid Method is gaining attention for boosting calorie burn through timed speed intervals. Experts ...