The main reasons for feeling tired and sleepy every day are sleep disorders, hypothyroidism and depressive states: 1. Sleep disorders: If the patient has serious sleep disorders, sleeping less than 2-3 hours a day, or not being able to sleep the whole night, the long-term patient will feel physically tired and sleepy. 2. Hypothyroidism or depressive states: If you feel tired and sleepy every day, ask the patient if he or she has a low mood, loss of interest in various things, loss of appetite, and easy to lose temper, If you feel very tired and sleepy every day, ask the patient if he or she has a low mood, loss of interest in various things, loss of appetite, easy to lose temper, and go for a thyroid function test and anxiety and depression scale to determine if the patient is in a hypothyroid or depressed state. So, every day, you feel very tired and sleepy, mainly in the above areas.