There are 4 different body types and each type has unique hormonal and metabolic characteristics. Some body types gain weight easily and are also more susceptible to cellulite. While experts categorized the 4 body shape as apples, bananas, pears shaped body… knowing which fruit your body most resembles can help you decide if you look best in boot-cut or straight-leg jeans, one author has developed another set of body types that he says can tell you about how your body works. Chiropractor Eric Berg, author of The 7 Principles of Fat Burning, explains his hormone-driven body types.