### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
SIr i am 24 years old unmarried boy. my problem is, when i over do some thing like pushing a car of my neighbour using my force and running . then after some distance my heart rate increases but beside it my down teeths feel tension , my body loses strength , i feel colapsed . i just laid down to calm my self , i recover when laid down. but i feel there is something wrong , it is a very bad feeling .  it is not usual heart beat .  I do heavy work with no problem but . when running and pushing work comes i fail.                   plz help.

### output:

Hello! Welcome and thank you for asking on Chat Doctor! I understand your concern and would explain that your symptoms may be related to a low blood pressure or a metabolic disorder (thyroid dysfunction, a Chat Doctor. ). The fact that this occurs only in a certain position or a certain physical activity is indicative that it is not a serious medical condition. It doesn't seem to be related to any cardiac disorders (based on the symptomatology). Have you measured your blood pressure during these episodes? Orthostatic hypotension, could also explain this clinical scenario. I recommend consulting with a GP for a careful physical examination, a resting ECG, a chest x-ray and some blood lab tests: - complete blood count-kidney and liver function tests-thyroid hormone levels-cortisol plasma levels-fasting glucose-blood electrolytes, etc. A head up tilt tests is needed to rule in/out a possible orthostatic hypotension. Meanwhile, I recommend performing a lot of physical activity (walking, aerobics, sports), to help you maintain a good physical performance and prevent any possible similar episodes. Hope to have been helpful! Best wishes, 