iSAW 02.05 Wondrous Worlds Within the Body

• The brain is much more active at night than during the day
• The fastest growing nail is on the middle finger
• The surface area of the human lung is the size of a tennis court
• Sneezes regularly exceed 100 mph
• Feet have 500,000 sweat glands and can produce more than a pint of sweat per day
• The average person expels flatulence 14 times each day
• After eating too much, your hearing is less sharp
• You use 200 muscles to take one step
• Your body has enough iron in it to make a nail 3 inches long
• Right-handed people live, on average, nine years longer than left-handed people
What’s with being a lefty? Is it really true? Let me know if you have the answer.