Mara Altman's volatile and apprehensive relationship with her body had led her to wonder about a lot of stuff over the years. Like, why wasn't evolution smart enough to build us with buttholes made out of something more durable? Titanium, perhaps? And why is brest cleavage sexy but camel toe revolting? Isn't it all just cleavage? These questions - and many more - have led to the comforting and sometimes smelly truths found in Gross Anatomy.