One of the reasons for being sleepy all the time is habit, as the saying goes, you want to sleep all the time. Another is that some diseases can cause sleepiness all the time, such as anemia, hypothyroidism, hypopituitarism, hypoadrenocorticism, all of which can cause sleepiness and weakness all the time. So it is important to analyze each case to see what is causing it. If you want to sleep all the time, you must go to the hospital and register with the endocrinology department first to check for endocrine-related diseases. If not, go to other departments, such as hematology, gastroenterology and respiratory medicine. If there is no disease, it is the habit of always being sleepy, to adjust the lifestyle, sleep patterns.