Originally Posted by skydive69
I also subscribe to the philosphy that training in intermediate HR zones accomplishes nothing. Hence, one should train either in the 90% HR zone - which builds strength and LT, or in the 65% zone which enhances recovery. Those that train in zones between those two are accomplishing neither.
Glad you wrote "philosophy", because there's a body of science that says those intermediate intensity levels are beneficial. And since fatigue limits the amount of time one can train at 90%, those other levels become even more important to a training program. "Tempo" isn't just for fun.