Where is the data that corroborates your position? Put up, or shut up. You have posted nothing but opinion here. No real data, citations or links to anything supportive.
I ride 5% assistance with a heart rate monitor and Smart Control on my Levo. Why? High Intensity Interval Training. 13 months of this and I'm down 160 lbs. I can ride for 3-4 hours at a time like this and have a ridiculous amount of fun without blowing out my heart and muscles. Plus, trail and...