Observations On Threshold

Ben Parsons givin' er at Jackson - photo: Mark GockeIntervals. The very thought of the word makes my pulse rise. From my first exposure to them as a 14 year old swimmer to my weekly date with them now, intervals inspire varying degrees of pain and satisfaction while preparing me to perform at my best. If you want to go fast in an endurance event, there is no substitute for regular exposure to high intensity training.

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