I came across Peak 8 Exercise on the net and decided to adopt it. I have always exercised regularly (yoga, walking, dancing) so Peak 8 doesn't make me exhausted - I wonder if I'm doing it like it should be done when I watch Dr. Mercola gritting his teeth in his demo video on YouTube. So I've raised the resistance level on my stationary bike. Just 20 minutes and the technique makes a lot of sense, but I still don't grit my teeth, although I do pant a bit after the 6th segment. The exercise is supposed to stimulate the production of "Growth Hormone' which shuts down when you get to 30 (and it's always been around actually). So I asked the Yi if the routine is good for my body and got 40 Unchanging. Release of tension and knots? The importance of sticking to the routine? Any thoughts? I don't want to bust anything.

Thank You!