I am 16 years old, and as far as exercise goes, I dance 3 nights a week for hours on end. I have done this for years and years and I am pretty physically fit. However, it seems to me I'm almost too thin... I'm 5'7" and weigh 110 lbs. I don't eat the healthiest of food... I love junk food. No matter what I eat, I don't gain weight. I have been thin all my life, but am I healthy?
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