<s>[INST] Hello doctor. My friend self pleasures himself a lot. He used to do it once or twice a day, but now he does it once a week, if at all. His heart has been hurting after he does it, and even the day after it hurts. He said when he first started to do it, everything was fine, nothing hurt. Then, his heart beat would drop after an orgasm then would hurt, then two times ago, his heart was racing for a long time, then it was normal but hurt, then last time his heart was hurting, beating fast, and the rest of the day and the day after, his heart was still faster than usual. He is reaching out to me for help. I m 14 and he is 13. He gets very tired and kind of light headed after he does it, and even hours later. Please help with what it could be. You can ask questions. He is seeing a doctor soon. Thanks AJ [/INST] DearWe understand your concernsI went through your details. I suggest you not to worry much. I can understand the cause behind your friends experience. It is simple tiredness, stress and anxiety. he gets tired after masturbation. Every children does. But worrying about that tiredness makes him anxious and more tired. Anxiety in turn creates fullness of chest and occassional pain.You might need a physician's assistance. Do consult a physician for further details. Visit  this answers your query. Available for further clarifications.Good luck. </s>