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.
14 Bulgaria: A year of pre-primary education (ISCED 0) is compulsory for six-year-olds. 15 Latvia: Pre-primary education (ISCED 0) is compulsory for five- to six-year-olds. 16 Poland: As from 2011, kindergarten (ISCED 0) is compulsory from age five. The age of starting primary education (ISCED 0) is being lowered from seven to six between 2009 and 2014; from 1 September 2014 it will compulsory from age six.