Nothing.

On average you dream for about 2 hours. It isn't always you remember your dreams, though.

Dream of the Day:

"i once had a dream that i was sailing down the nile river in egypt in an old -school egyptian sailboat. On the sides of the river were tall chanlink fences. All of a sudden(i don't know why) the boat started sinking. all the crew were juping in the water but were getting eaten by crocodiles. My friend(i didnt actually know him but i just knew that in the dream he was my friend) fell in the water and then so did I. Underwater I turned and watched my friend get eaten whole. I tried to swim away but one bit off my leg. I remember thinking OMG it just bit my leg off! , then i woke up."