So i heard that if you lie down like at any time of the day for about 30 minutes and don't move your brain will try and get you to get up. You resist this urge and then 5 mins later you will be in sleep paralysis. Is this true? and does this mean when your in SP you will enter a lucid dream?

If so then i can lucid dream at anytime of day just need to take about 35 mins to do so? i just want to clear this up.