121. 
 Most people blink 
about 25 times per minute. 
122.
 For every 2 weeks, 
the human stomach produces new layer of mucous lining, otherwise the stomach 
will digest itself. 
123.
 An average of 17 
muscles contracts for a smile. 
124.
 Every person has a 
unique tongue print. 
125.
 A sneeze moves out 
of our mouth at a speed of 100 meters per hour. 
126.
 An average human 
eye blinks about 6,205, 000 times. 
127.
 The tooth is the 
only part of the human body that cannot heal and repair by its own. 
128.
 In 
one square inch of skin there are 4 yards of nerve fibers. 
129.
 The 
human eye has the ability to distinguish about 1 million color surfaces. 
130.
 A square inch of skin has 100 sweat glands. 
131.
 The 
human ear can distinguish between hundreds of thousands of different sounds. 
132.
 On an average the human scalp has about 100,000 hairs. 
133.
 
Nails of toes or fingers take about 6 months to grow from base to tip. 
134.
 A square inch of skin consists of 1300 nerve cells. 
135.
 On an 
average an individual produces human being consumes about 500 kg of food per 
year. 
136.
 The adult human 
brain is about 2 % of total body weight. 
137.
 On an average 1.7 
liters of saliva produces each day. 
138.
 In one square inch 
of skin, there are 3 million cells. 
139.
 The human body 
consists of over 600 muscles. 
140.
 As we get older, 
the brain loses almost one gram per year. 
122.
123.
124.
125.
126.
127.
128.
129.
130.
131.
132.
133.
134.
135.
136.
137.
138.
139.
140.
Engr.Sulthan
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