Quote Originally Posted by liverred View Post
so if you dont dream for the first few hours of sleeping how do people enter in to the Ldream straight away after falling asleep at night?
Either:

(1) It's in the middle of the day. Circadian rhythms in monophasically sleeping people result in afternoon naps having proportionately more REM, often right from the start of the nap.

(2) They are well rested and need no rejuvenating deep sleep. This results in more REM, earlier in the sleep cycle. e.g. with WBTB

(3) They only believe that their dream occurred straight away. However it's a perception of time issue.