it's always come down to that i can't stand intervals more than to occasionally use them to build my top speed. other than that...i swear by distance running. if you're worried about impact, get a road bike or something like that. but i don't think that sprints are the golden ticket on this one.
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For God so loved creation, that God sent God's only Son that whosoever believed should not perish, but have everlasting life.
-John 3:16
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