-When you go through days without sleep, you will catch a cold and possibly endure splitting migraine headaches.
-Facebook is a fun shenanigan to play with but you should not spend your time in front of your laptop when you have beautiful Switzerland waiting for you to explore.
-When you sit on your camera, it will break the LCD screen.
I hope I learn my lessons. It's no fun being deaf, sick, unproductive and without a camera. =(