Is there any way besides the perceived exertion scale to calculate where you should be with your intense intervals? It seems so subjective (I hate the pain scale from 0 to 10, also). Can you estimate when you're at the highest level from your heart rate, or is the delay in getting to that heart rate an issue?
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Cassie
"If you drop an egg, you don't say, 'Oh, shoot' and drop the other 11, do you?"
-Source unknown, but obviously brilliant
Reached goal 4/16/2010...but kind of afraid to look these days 
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