dizzyness, sweats, and heavy breathing.

In an older person i would say that there could be a potential heart problem going on. But young people have had heart conditions as well. If you listen to the news, young athletes are having these problems. I suggest you talk to your parents and go in for a check up. Safe than sorry hon.

I agree with the person above... dizziness and trouble breathing could be a serious thing for someone your age.The sweating could be related to puberty(becoming a woman has a whole bunch of body changes and surprises) Are you overweight?If your'e anything like my 14 yr. old daughter,you may need to spend less time online and more time doing physical exercise.Geez,do I sound like a mother or what?!!