around 4.
A great number of things from dust to spiders
No, not usually.
Yes, you continue to swallow saliva while you are sleeping. Your body works automatically to prevent saliva from pooling in your mouth, and you may also produce less saliva during sleep.
It varies per person, but on average, a person may swallow around 3-5 times per hour during sleep. This can increase if there is snoring or other factors that affect saliva production.
During REM sleep, people seldom dream.
sleep apnea (a condition in which an individual snores loudly and stops breathing temporarily at intervals during sleep); inability to swallow properly because of enlarged tonsils; a breathy voice or other speech abnormality
rem sleep
Truly "deep" sleep does not occur during REM sleep. REM sleep is when you are dreaming. It is deeper than light sleep, but not as far down in unconsciousness as "deep" sleep.
A ladybug is born knowing how to sleep,breath, and swallow
People don't sleep during a battle. They fight or die. None of the soldiers slept it was only the commanders of the 1066
What most people during that era did. Sleep.