Forum: 20-Somethings
01-14-2010, 10:22 AM
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Replies: 12
Views: 679
Intervals are a very efficient way to get your...
Intervals are a very efficient way to get your cardio done. Also, I never know what to make of the readings on the machines, so I just go by how I feel (or if you have a heart rate moniter, that's...
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