when i excert my body to do anything. I immeditly get extremly tired that takes about ten to fifteen min. of whatever Im doing,if I try to beyond that point I sometimes feel very shakey. Like my sugar is low.Then sometimes the next day Im so tired I cannot even get myself out of bed. I am so weak I can hardly hold myself up let alone talk what could this be? Or can you give me Ideas of what I could look into on the net. All I know so far is I have sinus tackacardia. I take two heart med that make me feel much better. But Im still having this problems. the shakeness is a new syptom for me. can this heart issue make a person feel this bad? oh. I also take a stemulant when i do I feel a weird feeling in the middle of my chest. witch makes me think maybe a lung issue? I do how ever have my syptoms even without taking the stemulants. Thank you for your time & my spelling its not the bwst.
Hello! Welcome on Chat Doctor! I carefully passed through your question and would explain that your symptoms seem to be caused by a metabolic disorder (chronic anemia, thyroid gland dysfunction, low fasting glucose, or a Chat Doctor.  Anxiety can also trigger this situation. Regarding stimulants, I would not recommend taking them, because they can exacerbate anxiety and all this clinical situation. I would recommend consulting with your attending physician for a careful physical exam and some tests: - a cardiac ultrasound - a chest X-ray study-complete blood count for anemia-thyroid hormone levels for thyroid dysfunction- cortisol plasma levels for a