Sleep cycles and dream recall

It is important to improve your dram recall. While it is possible to have a lucid dream without remembering it, becoming familiar with your dreams will also increase your chances of becoming lucid in one. It is worth getting your dream recall up to a few dream per night exactly for that reason. 

In this picture, the stage 5 refers to REM sleep

Sleep cycles 

    Just a quick reminder of how often and for how long we dream. During the night, your brain and body go through several stages of sleep. Those stages come in cycles and this cycles repeat approximately every 90 minutes. This measurement is pretty much the same for all humans, with exceptions to those with particular brain damages. Please see the attached graphics, showing details bout the stages and durations. 

    We are in REM sleep approximately every 90 minutes of sleep, and while they start off at about 10 minutes, they increase in length to over 45 minutes. If you wake up while you are dreaming, you have roughly 80% chance of remembering what you dreamt. Therefore, try setting your alarm to 4.5, 6,  and 7.5 hours after you think you will fall asleep. This should wake you up directly from a dream. 

I will add a lot more information about sleep late as it is my great interest.