You dont have all the traits. Because your not a extreme ectomorph which is what the description is about, your a mixture, which is more tilted to the ectomorphic side of things. Are you stocky? No, otherwise i wouldnt be able to see your ribcage and you would be about twice as broad and have big arms. Mesomorph Have you got any fat on you at all? No Endomorph Can i see your ribcage? Yes Ectomorph Im not saying it's a bad thing Tunnicliffe, CLS etc are the same. All im saying is that you havent alot of muscle, not enough to possibly hinder your riding which is what people are curious about, You are lightly muscled which means you have muscle, but not enough to weigh you down whilst doing moves on the bike. If you were a extreme Mesomorph you'd be about 5 '10 - 5'11 tops and be about 15 - 17 stone of pure , over developed muscle without ever stepping foot in a gym with a massive square shaped head head and a huge square jaw. If you were extreme ectomorph you'd be about 6 foot '1, 9 stone with a tiny head and small triangular underdeveloped jaw. It's the way your gene's are the way your bones are formed etc I like A level Pe. And body anatomy