1. Human ears and hearing facts.
. Earwax production is necessary for good ear health.
.The inner ear is the main organ of balance.
.A human ear contains about 24,000 fibers in it.
.It only takes 7 pounds of pressure to rip your ear off.
.The human ear can distinguish between hundreds of thousands of different sounds.
.The human ears can hear in the frequency of 1,000 to 50,000 hertz.
.Your ears never stop hearing, even when you sleep. Your brain just ignores incoming sounds.
.Tiny hair cells in your inner ear are what translates sound waves to electricity to send to the brain.
.Your ears are responsible for the equilibrium and balance of the body – the inner ear has direct connection with the brain.
.The inner ear is no larger than a pencil eraser in circumference.
.The middle ear is composed of three small bones, and one among them, the stapes, is the smallest bone in the human body.
.The wax present inside the ear is made up of oil and sweat.
.Children have more sensitive ears than adults.
.The ears never stop growing through lifetime.
.Your ears secrete more ear wax when you are afraid than when you aren’t.
Sound that is above 130 decibels can cause pain to our ears.
.After eating too much, your hearing is less sharp.
2. Sleep and dreaming facts.
. You have no sense of smell when you’re sleeping.
.You burn more calories while sleeping than you do when watching television.
.Sleeping less than 7 hours each night reduces your life expectancy.
.The colder the room you sleep in, the better the chances are that you’ll have a bad dream.
.Babies start dreaming even before they’re born.
.The three things pregnant women dream most of during their first trimester are frogs, worms and potted plants.
.Scientists say the higher your I.Q. the more you dream.
.You can go without eating for weeks without succumbing, but eleven days is tops for going without sleep.
.In a year on an average person sleeps for 122 days out of 365 days.
.When we go to sleep and enter REM (Rapid Eye Movement),our bodies become completely paralyzed as areas of the brain that control movement are de-activated.
.An average person has over 1,460 dreams a year which is about 4 dreams every night.
.The average person falls asleep in seven minutes.
.By 60 years of age, 60% of men and 40% of women will snore.
.The human body releases growth hormones during sleep.
3. Human brain facts
.80% of the brain is water.
.An average adult male brain weighs about 1375 grams.
.A neglected child brain can be substantially smaller than that of a healthy child.
.A condition called synesthesia can cause senses to overlap. In other words, some people can taste words or hear colors.
.The right side of the human brain is responsible for self-recognition.
.Any damage to brain cells cannot be repaired completely.
.The base of the spinal cord has a cluster of nerves, which are most sensitive.
.The brain continues to send out electric wave signals until approximately 37 hours after death.
.The brain is much more active at night than during the day.
.The brain itself cannot feel pain.
.The brain operates on the same amount of power as 10-watt light bulb. Your brain generates as much energy as a small light bulb even when you’re sleeping.
.As we get older, the brain loses almost one gram per year.
.Only four percent of the brains cells work and the remaining cells are kept in reserve.
.Our Brain has over 100 billion nerve cells.
.The adult human brain is about 2% of total body weight.
.Men listen with the left side of the brain and women use both sides of the brain.
.The average human brain weighs about 3 pounds.
.The human brain can read up to 1,000 words per minute.
.The human brain cell can hold 5 times as much information as the Encyclopedia Britannica. Or any other encyclopedia for that matter.
.The Human brain constitutes 60% of white matter and 40% of grey matter.