Wearing and properly using safety equipment reduces the risk of injury during physical activity.
Please select the best answer from the choices provided.
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don't worry, but do consult a doctor.

explanation:

having a high metabolism at age 13 is not abnormal.   however, if you are concerned, do consult a doctor.   the doctor may identify a correctable issue, and then you'll have your answer.   in the meantime, there are a few steps you might consider.

first, reflect on just how much physical activity (work out and dancing) you are getting relative to your caloric intake.   keep in mind that if you are interested in gaining weight, you must have a higher caloric intake than output.   second, if eating robust healthy meals is not providing enough calories, you'll need to include high caloric, yet healthy, snacks.   i warn against using an over the counter high-calorie supplement (drink or food) until you have consulted a doctor.  

cancer can take years to develop.

it could be from radiation, or a cancer causing substance or amny others.

theres lung cancer, brain cancer, breast cancer, heart cancer

explanation:

its bassicly asking u   to answer it in your own words does that