<s>[INST] tightness in chest  Im having this tightness after just getting out of the shower. I was testing on my right arm and when I breath it was a mild tightness.  I sat up and itbseems to have gone away.when something like this happens I think  mild heart attack or stroke. other then that what could it be.nite I ate a salad from McDonalds and four wings from KFC. 2 or 3 hours prior. [/INST] Hi thanks for asking question. From eating outside food you might have got viral infection, and it can lead to headache and muscular pain Like constitutional symptoms. Your chest tightness might be because of that. Simple analgesic can be taken for it. Hot compress also helpful. If congestive symptoms like blocked nose present steam inhalation and antihistamines useful. Second it could be because of heavy weight lifting or improper bed posture. If still your chest tightness increasing then chest x-ray and electrocardiography might be done. Wish you good health </s>