Great story -- thanks. I'll send to my workout buddy, who tends to do 45 minutes of running at the exact same pace. He tried ONE running interval last week and said he thought he was going to die. I'm trying to convince him that he can get out of the gym much faster with HIIT.
My only comment here is that an hour workout is not HIIT. It's still interval training, but from what I've read true HIIT can't be sustained for that period of time.
HIIT on NPR
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