Why intensity matters: New research finds high-intensity intervals can deliver powerful vascular benefits, but only when balanced with recovery and other training types. Zone 2 advantage: ...

Army Reserve Spc. Julian Ditona, assigned to the 98th Expeditionary Signal Battalion, 335th Signal Command (Theater), sprints to the finish line of a 2-mile run during the Army Physical Fitness Test ...

Balanced training formula: Combining Zone 2 cardio for aerobic base and limited high-intensity intervals for peak output can optimize VO2 max. Performance and recovery: Spacing intense sessions and ...

A systematic review and network meta-analysis of 37 studies (6,818 patients) compared exercise modalities and intensities, ...

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.

Endothelial dysfunction is a hallmark of cardiovascular disease (CVD) and plays a central role in vascular inflammation, ...

If you follow the run/walk method, you know alternating run and walk intervals can save energy and ultimately improve your overall pace. And if you progress those run/walk intervals the right way, you ...