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Old 01-01-2008, 09:33 AM
latemp latemp is offline
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Join Date: Sep 2007
Posts: 52
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i use a heart rate monitor and run for 20 min in my high zone. i wanted to start sprinting, but honestly i just havent found a sprinting routine yet. but what about sprinting everyday, would that hurt me? whats the most you can do cardio a week without it hurting you? i like being active besides just lifting.
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