![Intervals, Thresholds, and Long Slow Distance: the Role of Intensity and Duration in Endurance Training Intervals, Thresholds, and Long Slow Distance: the Role of Intensity and Duration in Endurance Training](https://sportsci.org/2009/ss_files/image009.gif)
Intervals, Thresholds, and Long Slow Distance: the Role of Intensity and Duration in Endurance Training
![Intervals, Thresholds, and Long Slow Distance: the Role of Intensity and Duration in Endurance Training Intervals, Thresholds, and Long Slow Distance: the Role of Intensity and Duration in Endurance Training](https://sportsci.org/2009/ss_files/image014.gif)
Intervals, Thresholds, and Long Slow Distance: the Role of Intensity and Duration in Endurance Training
Stephen Seiler on Twitter: "80:20 training intensity distribution for dummies like me: https://t.co/HReZiCAij5" / Twitter
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