The human eye blinks an average of 4,200,000 times a year.
233
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The human brain is more active during sleep than during the day.
28
Your thumb is about the same size as your nose.
124
The human brain has the capacity to store everything that you experience.
4k
Your fingernails grow faster in summer.
744
The human sigh acts as a physiological reset button.
23