Sleep paralysis occurs as a person is moving into or out of REM (rapid eye movement) sleep, the deepest part of sleep. During REM sleep, the body is largely disconnected from the brain, effectively leaving the body paralyzed.
England and a few other countries start formal education at age 4 or 5. That's harmful and misguided.
Education in Poland. Compulsory education in Poland starts at the age of six from the mandatory 0 class kindergarten (Polish przedszkole, literally pre-school). At the age of seven kids start the 1st grade of primary school (Polish szkoÅa podstawowa) lasting for 6 years and finished with an exam.