I'm looking for a webpage or youtube video that explains heart rate zones in a clear and concise manner. Please let me know if you have seen one. Any of the books on this subject good?
scroll down towards bottom and it explains HR Zone z1, z2, etc. and how you should feel in those zones.
In what manner, Physiological adaptions? something other?
Does the "Used for" breakdowns in the following help? http://www.3-fitness.com/tarticles/zones.htm
I'm sure theres's something for you in Joe Friel's blog: http://www.joefrielsblog.com/