Why am i tired all the time?even when i sleep 8-10hours,no i don't have iron deficiency,whenever i eat light or heavy meals i feel more exhausted??

Sleep apnea?: Snoring and sleep apnea could be the reason (among many, many other possible reasons) Myasthenia or other myopathy or neuromuscular disease should be considered. Endocrine disease (pituitary, thyroid, and / or adrenal cortex deficiency) is possible. Infections – mononucleosis, Lyme disease, tuberculosis. Pregnancy is also on the list.