editorNadia replied over 1 year ago:
Hi rain88, thank you for your question. How tall are you? For most people, 100 pounds is actually underweight. Working out is a great way to keep your body healthy, but make sure that you're not overdoing it and you're giving yourself all the nutrients you need. You can try our Body Health and Physical Activity quizzes for specific recommendations for your body. I'm sure you're a beautiful girl, and treating your body well will ultimately make you happier and more comfortable in your skin than hitting that 100-pound goal.