question: 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 5'8 1/2. I am also a male. What's wrong with me?