Knowledge Base

Interval Workouts

Interval workouts are a fundamental part of any training program and critical for any athlete who seeks improved endurance and explosive power. Intervals can bring huge performance adaptations—but only if they are executed properly.

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cycling hill climb repeats Kristen Legan

Dr. Seiler: Short Interval Stacks, Part 3

In this final video of his “short stack”, three-part series, Dr. Stephen Seiler discusses some research studies that compare short interval and long interval training and how they impact endurance capacity in already well-trained athletes.

Chris Case Flagstaff Road Fast Talk Podcast

Dr. Seiler: Short Interval Stacks, Part 2

Dr. Stephen Seiler walks through some real-life short interval workout data to reveal some rules of thumb for how you can integrate these into your own training.

runner staircase high intensity intervals

Dr. Seiler: Short Interval Stacks, Part 1

Interval training sessions with repeats of 30:30s, 40:20s, and 30:15s have become very popular. How does the (endurance-trained) body respond to this type of high-intensity interval prescription?

Fast Talk interval Chris Case

This Is an Interval

Trevor Connor revisits the fundamentals of aerobic versus anaerobic pathways, and helps us understand more advanced principles of interval training.