54: Applying the polarized training model, with Dr. Seiler
Fast Talk
00:00
How Slow Is Zone One?
Trevor Conner: Some people just need time to wrap their heads around how slow is zone one. "It depends on the person, of course, everybody's different," he says. The third and fourth hours are where most riders don't want to do a ride because they feel like it will be too much for them.
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