Tosca Reno, author of The Butt Book, weighed over 200 pounds when she graduated from University in her 20s. At age 40 the still-overweight mother of three discovered eating clean. By 41 Tosca had become a fitness participant and swimsuit model, appearing in such magazines as American Curves. She now writes a regular over-40 column in Oxygen magazine and has written many articles for Reps! and Maximum Fitnss.