Am I overweight if I'm 12 years old, 5'6 and 150 lbs?
You can determine the technical answer with a BMI chart online but what really matters is how you feel about your body. While I totally agree that people, at any age, should not obsess over their weight, you should talk to your pediatrician about the best weight range for you, if it is really on your mind. My daughter was always bothered by her weight at your age. She joined the school crew team and without any effort, lost over 40 pounds, but she WAS overweight. The idea, I think, is to find some sort of exercise or activity/sport that you enjoy. Some people love to work out at a gym. Others love to jog. Some like yoga, a dance class or aerobics class, etc. It doesn't matter what it is but if possible, something you can do 3–6 times a week. You will actually feel more energized, and you will sleep better. My daughter, now in her late teens, found so many free apps and websites that teach you what to do to stay in shape. The idea however, is to be healthy, not to worry about how skinny you are. Believe it or not, if you do as I suggested, being thin, healthy and fit comes naturally. It can take a few months for your body to begin to change, but you and others will start to notice within 2–3 months!