Umm ... that's a question I've never contemplated ... but I imagine it's "lean and lightly muscled" - unlike the scary image on this book's cover.
The "naked" question is a come-on: Willey, an Idaho osteopath, offers a traditional diet plan (lean meats! vegetables! rice!), along with stranger stuff:
A "free window" - eat anything you want for three hours! Or a whole day! After doing so, he says, clients get so hot they have " ... to undress or go outside to cool off." (There's that naked bit again.)
A "free" salad, proteins and fats, rice or potatoes ... oddly, no mention of Pepperidge Farm cookies. What fun is that? (Though an eating plan does include Ding Dongs.)
Check out Weight Watchers - and try not to think about your doctor naked.