Fartlek
![Fartlek - Sketchplanations](https://images.prismic.io/sketchplanations/5a299165-3435-4063-915c-33f6bb181881_100342863016.jpg?auto=compress%2Cformat&fit=max&w=3840&q=50)
Somewhat improbable name for a simple training technique alternating fast and slower sections. Great if you’re short on time.
Published
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