On the topic of soda and similar drinks.
For some reason, most caffeine beverages cause severe mood swings for me. Last time consumed some soda, about two months ago, I stayed awake for 24 hours straight, and the severe panic attacks and fits of crying crippled me. Negative thoughts were constant until my second round of nighttime medication made me fall asleep.
I have no idea why I such intolerance to high amounts of it at once. I guess some of us can handle it while others cannot.