how can my sister eat whatever she wants and stay skinny but i cant?

Kshep

New member
seriously! I'm 14 and my sisters 16 and she can eat anything she wants and shes still tiny she weighs like 105 lbs and is like 5' 6" and I'm like 5' 4" 125 lbs were the same amount active. Does anybody know why this might be?
 
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