1. I warm and clean the air you breathe nsoe 2.there are 300 millions of me in your lungs rai cas3. I leave your body when you breathe out craobin doidixe 4. Iam a long tube connecting tour mouth to your lungs tarehca 5. I go through the air sacs and into the blood oyxegn

Because without physical activity, the body has extra "energy" if you will, and so when it is time for bed you are not tired, so you end up staying up all night. also there is probably an effect on your internal clock, which messes with your melatonin production which goes hand in hand with your sleep cycle

Psychological disorder. transgender disorder