You are what you eat. . . . Cat smart, sassy, and funny—but thin, she’s not. Until her class science project. That’s when she winds up doing an experiment—on herself. Before she knows it, Cat is living—and eating—like the hominids, our earliest human ancestors. True, no chips or TV is a bummer and no car is a pain, but healthful eating and walking everywhere do have their benefits. As the pounds drop off, the guys pile on. All this newfound male attention is enough to drive a girl crazy! If only she weren’t too busy hating Matt McKinney to notice. . . . This funny and thoughtful novel explores how girls feel about their bodies, and the ways they can best take care of their most precious resource: themselves.