- Hiccups happen when the diaphragm, the muscle that controls our breathing, becomes irritated and start to spasm and contract uncontrollably। With each contraction, air is pulled into the lungs very quickly, passes through the voice box, and then the epiglottis closes behind the rush of air, shaking the vocal chords, causing the "hic" sound। The irritation can be caused by rapid eating, emotional stress and even some diseases. To relieve sip cool water.
• The length from your wrist to your elbow is the same as the length of your foot.
• Your heart beats 101,000 times a day. During your lifetime it will beat about 3 billion times and pump about 400 million litres (800 million pints) of blood.
• Your mouth produces 1 litre (1.8 pints) of saliva a day.
. On average, you breathe 23,000 times a day.
Here I found the facts about human body
http://www.didyouknow.cd/fastfacts/body.htm
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