Sleepiness during the day is always due to heavy dampness in the body. The evil of dampness is blocked in the middle jiao, so that the clear yang can not rise, the head orifice is not moistened, so it will lead to sleepiness during the day, sleep more, sleepiness and fatigue, and even memory loss, these symptoms will be more obvious. There is also a deficiency in the body after a long illness, lack of essence and blood, deficiency of essence and qi, mostly seen in the bedridden or some elderly people, less activity, insufficient oxygen status, will appear sleepy during the day. Older people have a weakened ability to produce qi and blood, a weakened ability to biochemically produce grains and cereals, a deficiency of essence and blood, a deficiency of essence and qi, and a loss of moistening of the head orifices, which can lead to a decrease in nerve function and a decrease in stimulation of external reactions, which can also lead to daytime sleepiness or dull reactions, which should be differentiated according to different situations.