Well im not always tired. just at certain times in the day. im tired after like 11 pm at night, and i cant really concentrate. my eyes get really heavy and sometimes i go into this weird state where im partly conscious but partly sleeping ( i do my work but i start writing really odd stuff). i know thats probably just me not getting enough sleep (about 5 hours a night) but i also get tired after lunch. in 5th period. and its not food coma because i didnt eat one day and i still was sleepy. i went to the doctor a few months ago for a blood test and they said that have lower iron than usual. and also a minor case of anemia or something. does lower iron make people sleepy? also, im really busy with school (3 AP classes) and thats why i only sleep 5 hours a night.