It's time to turn back the clock! In 20 YEARS YOUNGER, Bob Greene offers readers a practical, science-based plan for looking and feeling their best as they age. The cutting-edge program details easy and effective steps we can all take to rebuild the foundation of youth and enjoy better health, improved energy, and a positive outlook on life. The four pillars of the program are: ** An exercise regimen for fighting muscle and bone loss ** A longevity-focused diet ** Sleep rejuvenation ** Wrinkle-fighting skin care Practical advice on topics such as changing appearances, controlling stress, staying mentally sharp, and navigating medical tests is woven throughout the book. Readers will walk away with a greater understanding of how the body ages and what they can do to feel - and look - twenty years younger.