Are you all asleep ever exceed the limit and still feel sleepy ?
Maybe you should be careful .
You need to be aware of the presence of disease in your body .
Usually come when we feel sleepy fatigue .
However, under certain conditions always feel sleepy .
What cause ?

1. Anemia

~ Anemia its a major cause of sleep often comes
~ Lack of blood causes the lack of iron

2. Hypothyroidism
~ The thyroid is a small gland at the base of the neck that controls metabolism and speed of change of fuel into energy .
~ When the gland is underactive and metabolic functions are too slow , people may feel lethargic and sleepy .

3. Diabetes
~ Fuel is energy released from the cells because of the presence of oxygen .
~ Individuals with type 2 diabetes complained of feeling tired and sleepy all day .

4. Dehydration
~ Fatigue and drowsiness can be a sign of dehydration

5. Depression
~ Depression is not just an emotional disorder but also contributes to many physical symptoms .
~ Fatigue , drowsiness, headache and loss of appetite are common symptoms .

6. Sleep Disorders
~ As with sleep apnea and insomnia .
~ People who suffer from lack of sleep due to insomnia, sleep apnea, the respiratory system will be inhibited so often cause fatigue and sleepiness .

7. Chronic fatigue syndrome
~ For chronic fatigue syndrome , fatigue doesn't quickly disappear and are usually characterized by lethargy drowsiness, irritability, muscle aches, to memory loss.

This little info from me .
If you feel sleppy much , go to doctor and check your condition :)