“The study also stressed that the “blue light” emitted from smartphones disrupts the body’s production of melatonin, a chemical that helps induce sleep. Countless studies have shown that the bright lights emitted from phones and computers can delay sleep for hours past your bedtime.”
Long story short: turn off all artificially lite electronics around but before sun set.
Astral projections and out of body experiences occurs when serotonin is broken down into melatonin in the dark.
These are key factors into obe’s . Along with meditation of course.