Complete this after phase 1 and phase 2

Previously labeled as phase 1 or PST run program.  

6 week interval run program designed specifically for improving your lactate buffering capacity and your ability to handle greater ground forces. 

Complete this twice a week to start and increase as tolerance improves.  Do not do this more than three days a week.  

This will translate into a faster run times and conditioning against shin splints regardless of the run distance, aside from an ultra marathon.

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