Low intensity burns a higher ratio of fatty acids vs glycogen. So its glycogen sparing. Higher intensify will burn more total fat but also at the added expense of way more glycogen, which is an undesirable result.
Low intensity works plain and simple. The goal is to be barely sweating, HR around 120-140 BPM.
I didn't consider the issue from an explicitly bodybuilding-oriented perspective, hence my faux pas: not including walking without breaking a sweat in my definition of cardio; and, outrageously assuming that there is utility to be derived from cardio other than barely stimulating one's LVH-ridden heart enough to strip fat while maintaining one's balloon muscles such that all manner of thong escapades may be undertaken.
My mistake.
