It takes about 20 seconds for a red blood cell to circle the whole body.
102
Tigers can see 6 times better at night than humans.
305
We share 70% of our DNA with a slug.
218
Pain occurs when sounds are above 130 db.
124
A human being loses an average of 40 to 100 strands of hair a day.
133
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
In one day, adult lungs move about 10,000 litres of air.
11
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191