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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?

Whoop data Coach Connor

How to Analyze Whoop Data

Coach Connor walks through the Whoop dashboard, analyzes his data, and points out some peculiarities of his physiology that are only revealed through Whoop data.

polarized training lactate curve Dr. Stephen Seiler

Training Intensity Zones: Research vs. Practice

Dr. Stephen Seiler explains the endurance training zones schemes he uses in research (3 zones) and in practice working with Norwegian coaches and athletes (5 zones) as part of the Norwegian Olympic Federation model.

Neal Henderson on a trainer bike Fast Talk Podcast

Favorite Workouts of Fast Talk All-Stars

We hear from Fast Talk all-star guests like Joe Friel, Neal Henderson, and Amos Brumble about what their favorite workout is and why.

how athletes slow down with age Dr. Stephen Seiler

Breakdown: How Athletes Slow Down with Age

Like it or not, we slow down as we age. Do some parts of our physiological machinery slow down faster than others? If so, what does that mean for training and endurance performance?

Adjusting Training During COVID-19 Dr. Stephen Seiler

Adjusting Training During COVID-19

Endurance athletes at all levels are adjusting to a new reality. Dr. Stephen Seiler shares some thoughts on ways athletes can adjust and make the most of a difficult situation.

Isaiah Newkirk indoor cycling at CU physiology testing laboratory

Adjustments to Train Indoors

There are four balances to strike when training indoors: 1) bone health, 2) muscular balance, 3) intensity and duration balance in our training sessions and 4) energy balance