What not to eat before bed (1) : Caffeine

It should be obvious, but you should avoid caffeinated drinks and foods — coffee, tea, many soft drinks, and chocolate — several hours before bed. Caffeine is a natural chemical that activates the central nervous system, which means that it revs up nerves and thought processes. For people who are sensitive to caffeine, that excitation is not pleasant, making them feel jittery and slightly ill. If you drink caffeinated drinks too close to bedtime, chances are it will keep you awake. Of course, what “too close” means is totally individual. Sensitive people should stop drinking caffeine at least eight hours before bedtime (that means by 3pm, if you hit the sack at 11pm). You can play with your particular timing … just don’t experiment on a night when you absolutely must get a good night’s sleep. Source

Terbaca ini. No wonder la aku takleh tidur malam kalu minum teh! Sensitive people (READ: ME). - too close of bed time for tea is morning. Which mean, kalau aku nak tidur dengan lena tanpa paksa-paksa biji mata, aku tak boleh minum tea langsung pada hari berkenaan. Of course this only applicable for just a few days. Kalau aku minum straight dua tiga hari, hari ke empat aku tetap akan padam awal. Sebab otak dah tak mampu nak layan chemical yang suruh jangan tidur tuh.