I found an old book in the warehouse being readied for resale by the Friends of the Library titled "Miracle Exercises, Instant Improvement." Author Dr. Edwin F. Flatto wrote: To keep your breasts young and healthy, use books." He described three exercises with a heavy book in each hand--extend arms laterally, raise arms to side, inhale up, exhale down (tone pectoralis). Bring arms to front and raise them overhead ( 5 to 10 times daily). Lying on back, swing arms overhead and touch floor. Breathe deeply. Summation: Heavy books can help your looks. So what can you do for us electronic thingies? Hard copy for hard bodies.