I'm a 35.9% female and I dig males around the 20% - 25% mark. Anything below looks either ill or unnatural, anything above looks well unhealthy to me.
I like to lose weight every now and then, which seems to happen quite naturally and cyclically. I first started working out properly when
a) I nearly got killed by a bookshelf, in slow motion
b) I couldn't lift 90-pound baby rottweiler pooch when he tore out a claw
c) I started having severe back pain from just sleeping
So, I seem to feel best around the 30% mark, 25% is always possible, but it makes me feel weak, get tired more easily, feel cold more often (even when it's warm, when I get tired with <30%, I feel cold) and generally fall apart below 25%. I know it looks better, but it turns me into a less stable version of myself, both mentally and physically.
Also, being otherwise healthy, with the winter still going strong, the 35.9% seem to allow me to withstand even below zero temps without, well, breaking a sweat. Most colds just seem to pass me, and when I do get one it's chicken carcass broth with ginger and chili peppers all the way, and while I might still merrily infect everyone around me, I myself feel outrageously fine.