Add Yahoo as a preferred source to see more of our stories on Google. When we talk about building a strong core, we're referring to a lot more than six-pack abs. Your core is a collection of muscles ...

View post: The Exact Fitness and Nutrition Strategy a 600-Pound Gamer Used to Lose 400 Pounds in Just 17 Months Many people neglect progressive overload for ab training, limiting results. A ...