Imagine having a firm midsection. What if you could avoid the thousands of crunches to get there? Is it possible to stop rolling around on a dirty floor to build a rock-solid core? Yes And, it's way easier than you think. Armed with 10 simple exercises and 15 minutes to spare, you can get it done From the author of The 90-Day Home Workout Plan, comes a revolutionary workout routine for your core muscles. A typical...