are you stressed at something that you cant tell us? hehe
i used to wake up middle of the night thinking my homework due date past and i din make it during school time. dream of my teacher. not in a wet way (i wish). if you do have problems (i dont like to use this word cos it seems negative) you could talk to a specialist. it is a common thing and if it helps u, by all means
other than that, i always wash my feet nicely before sleeping. no matter how tired. one malay friend told me that its a culture among malays. he say if you dont you might not have a good sleep, sometimes with nightmares etc. i was standard 6 that time so it stuck with me til now. good habit also wat.