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03-07-2008, 01:06 PM
  #152
WhipNash27
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Join Date: Jan 2007
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Quote:
Originally Posted by nni View Post
15 minute intervals, not 15 minute total workout.

as for burning off muscle, this is all dependant on your diet and pre workout nutrition.
If you add in the warmup and cool down it's 25 minutes, still not one hour. If you are truly exerting 100% there's no way you could continue on for an hour. After 10 - 15 minutes of doing just that you'll be shot. Even the moderate effort you put in between intervals becomes hard by the end of your workout.

They also say do 15-20 second intervals whereas the other says to do 60 seconds. You have to be in damn good shape to do a 60 second interval of 100% effort.

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