yes, i will feel alert back only after 3-4 hours i have been awake . I will only feel alert during the " sleepy period after waking up" if , i was doing outdoor activity such as jogging, walking , swimming or talking frequently to someone. If i was reading a book at that particular time after breakfast i will definitely fall asleep.
This happens almost everyday, and i realize the sleepiness sometimes occurs after i had my meal ( breakfast , lunch and dinner). Some one says its due to my blood was being used to digest the food so less oxygen gets to my brain?!some says i have bad blood circulation? i don't know~~
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