I was just wondering about LD'ing the other day... It is believed you dream because your brain processes things and you emotionally deal with stuff in you subconcious... Would'nt LD'ing mess things up? Instead of dealing with the stuff your brain would normally do, you sort of take that time away to do other things.... if you dont get enough REM you go crazy. But I guess its not a big problem since not every REM is always LD...