because our nervous system work in a certain way, and naturally
we are tuned to get aroused by certain curves in a woman's
body.
so if a girl is too fat, the cellulite turns us off, and the flappy
flesh too. but having a toned and slender body allows men's brain
to connect with their hormonal instincts.
this same principle explains why men generally like boobs and butt
and a small waist on women; and women like generally the same parts
of men too, like eyes, shoulders, washboard abs, arms,
etc.