Sleep is an odd occurrence, we’ve slept since time began and we do it every night, yet we still don’t know exactly why we sleep. As technology has dramatically advanced in the past 50 or so years, we now know the different stages we go through when we sleep.
During the early stages of sleep you are still relatively awake when the brain is producing small and fast waves, once it starts to relax these waves become slower and it’s during this time that you are not asleep but may experience strange and vivid sensations known as hypnagogic hallucinations like someone calling your na
