Caffeine...D:

Too much caffeine can cause a feeling of impending doom. On the other hand, for me any caffeine consumption whatsoever, will lead to hysterical laughing fits at 3 in the morning and making dozens of sandwiches...    

Wrinkled grip

Your fingers wrinkle up when your in the water for a long time because the wrinkled  prune-like impression is supposed to give you a good grip under water. :)