Percentile for current mile time, marathon time, bench press max, and deadlift max, compared to the general population and equally weighted for the 4 areas.

I have friends and acquaintances who are jacked out of their minds or extremely fast, but I think that they lose out on some of the benefits of other exercises. My working hypothesis is that trying to stay balanced will yield most of the benefits of being really into one area, without side effects that may accompany being too specialized.