Originally Posted by
asgelle
How long above zone 2? 5 minutes, 1, 1 second? I go above Zone 2 for 1/10th of a second and it takes 20 minutes for metabolism to recover?
Hmmm. I believe the claim is that if you go 1 beat over Z2 for 1/10 of a second, you won't burn fat for 20-30 minutes.