Added a new form of torture to the repertoire this morning: Lactate stackers. They sound simple -- go just about all out for a minute, jog for two minutes to recover, rinse and repeat. May be simple, but they're brutal. Especially if you wait until it's almost 80 degrees to start them. Legs were a little heavy, not nearly as much life as for last week's Billat intervals (which I did at just about the same speed). HR was maxing out at about 160 on the last four reps.
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