High Metabolism Definition

Am i an ectomorph or a mesomorph?
I am a 14 year old girl. I am very skinny but not like sickeningly. I can wrap my hand around my wrist and my thumb and pinky touch if that helps? I weigh about 105 and I am 5′ 3 1/2″. I am naturally very athletic and after not working out for a year i can still manage to do 70 sit ups, 10 pull ups, etc. I have also always had muscle but not well defined. But i have a very high metabolism and no matter how much i eat i dont gain a pound and have a very flat stomach and have been told im too skinny. So am i an ectomorph or a mesomorph? I know the definitions of each im just a little confused on what I am.
sounds like you’re petite. you’re defs and ectomorph. i’m a mesomorph. mesomorphs have the ability to put on muscle that shows, ectomorphs often dont. ectomorphs have good metabolism and can often eat a lot without putting on much weight. here, these images should help: http://www.pponline.co.uk/encyc/img/251Bfig1.png .
but trust me, you’re an ecto.
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