These are meant to be “on/off” style intervals where you go hard for the 40 second “on” periods, and as easy as possible for the 20 second “off” periods.
Expect to spend a significant portion of your time at 85 percent or greater of maximum HR. The aim is to push our top-end power and cardiovascular adaptations.
Mimic the demands of a full marathon without having to go the distance.
For triathletes looking to increase their VO2max, sharpen their speed, and build tolerance for harder efforts this high-intensity interval workout is a great fit.
This workout focuses on minimal gear shifting between intervals to better maintain speed in a race.
Grab two cycling buddies and get ready for a high-octane group ride.
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Interval workouts are a fundamental part of any endurance training program. Learn exactly what intervals are, why they are so important, and how to properly execute interval workouts with the help of Sebastian Weber, Neal Henderson, and Dr. Stephen Seiler.