Rob Riches, who is a cover model and TEAM Optimum Nutrition Athlete, shares with us the science behind developing a chiseled, well-developed 6-pack abs. He shows this by using this well-toned body to explain 3 different types of ab muscles that can enhance how the way we train them. Really insightful and informative, especially more lively and interesting than looking at static pictures. Definitely helps for those who have not fully understand how our human body muscle structure works. Enjoy but note the details though!












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