Personal Trainer
Moderator
12/7/2010 2:38:53 PM | No, you're not crazy... as long as you're clear by your doc, you'll get way better results at 90% vs. 60% at the same time.
220-age = THEORETICAL max heart rate.. doesn't mean that it actually is..
Obviously you have a strong heart to train so long at that time interval. Also try HIIT for a change of pace and an increase in results!
PT.
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