Im 112 pounds and afraid of gaining. if i wanted to loose or stay about the same, what should i do?

Understand Your Food: A balance between calories consumed and exercise (energy expended) is the key to weight maintenance. Understanding how your food choices contribute to weight gain is a good start. Essentially, carbohydrates (breads), dairy (fats) and sugar are responsible for most unintented weight gain. Google the Mediterranean Diet for ideas on how to incorporate healthier food choices into your diet.