This means that ectos usually have a small rib cage, narrow shoulders, and long thinner limbs. An ectomorph will struggle to add both muscle and fat, so adding body weight kan zijn usually a slow process. Once again I know you are thinking,"what effect does this have on fat loss?”. https://redbottom.us/categories/regular/health/222-the-comprehensive-guide-to-pediatric-nutrition-optimizing-health-from-infancy-to-adolescence