Core Strength for 50+: A Customized Program for Safely Toning Ab, Back, and Oblique Muscles Prepper All you need is a

All you need is a knife

making space for a loved one

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allowing you to develop lean muscle

Core Strength for 50+: A Customized Program for Safely Toning Ab, Back, and Oblique Muscles Prepper All you need is aStay young, improve your mobility and prevent injury with the bestselling fitness guide for core strength training for 50 plus from Dr. Karl Knopf. From swinging a golf club to carrying a bag of groceries, the core is everything. Balance, agility and youthful stature are just a few of the benefits of a toned and powerful midsection. Core Strength for 50+ has everything you need to: Improve posture Enhance sports performance Guarantee low back health