Why train to achieve a high anaerobic, power-to-bodyweight ratio?

The bottom line is this: because the very act of training to achieve this goal, and the maintenance of the required lean musculature to to enable sufficient proficiency (or a decent ratio) therein, is highly, highly, costly in metabolic terms. Fast-twitch muscle fibers, which are preferred and proliferate under this manner of training/expression, are energy hogs. Couple this kind of training regimen this with a Paleo lifestyle and you’ve just put together the most lethal one-two combination known to physical culture.

-Theory to practice