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

### input:
I lived in Arizona for 2 years and in that time I did not do hardly any exercise. I sat around all day on the computer for school and did not stretch or run at all. I recently moved back to Ohio and enlisted in the National Guard but I have a big problem. I cannot jog without getting winded and my heart rate going up, my muscles all over my body are sore, my knees feel like they have pressure in them, my shoulders and neck ache, my left shoulder pops when I rotate it, my rib hurts on the left side and throughout my lowerback, I feel stiff, I shake when I bend over, my hands tremble slightly, and I get cramps on the bottom of my feet. I ran track and cross country before AZ and never had this. Now I feel like I cannot even do 10 push-ups. I am 18, 134 pounds, and 58 1/2. I am also a male. Whats wrong with me?

### output:

DearWelcome to ChatDoctorWe understand your concerns went through your details. You are just 18 and possibly nothing is wrong with you. As you already said, you are doing these after almost two years. It takes time for the body to adjust with the new routine. Secondly, the training is not gradual, it is sudden. Then it is quite natural for you to have all these symptoms and signs including palpitation. You could be feeling the palpitation because you are anxious. Stay put and gradually you will be alright. If you still need my assistance in this regard, please use this link. http://goo.gl/aYW2pR. Please remember to describe the whole problem with full detail. Hope this answers your query. Available for further clarifications. Good luck.