Quote:
Originally Posted by nick93
yeah like haasino said the pfa is the only time you actually have to run the mile and 1/2 in time limit. the first sustained run is 5 min. then it goes to like 8 then to 12 or 15 or something like that and the last one is 20. you can jog it or whatever you want to do. the pfa is all that really matters
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How often are these sustained runs?