Sleepless night

Last night was a sleepless night for me, I only managed to sleep at about 4 something in the morning and need to wake up at about 7am for work.

In the office, both MK and JC suspected maybe because of the carbonated drink (Pepsi) that I consumed quite late last night at about 10pm. I was surprised and I just get to know that carbonated drink contains caffeine...

I'm not sure whether this was the reason why I can't get to sleep last night but for sure I'll think twice before taking any carbonated drink late at night starting from today.