I lost like 20 lbs this summer, I am 16, I excercised by swimming everyday and watching what I eat. I came home form summer break to Chicago and stopped working out and now I have headaches everyday. I don't know why? I drink diet coke a lot and I didn't start until recently, is that why? I really want to know because its really bothering me. My mom says its cuz I stopped working out, my aunt whos a nurse said its cuz i don't drink water. I need to know why!
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