In 24 hours the average adult accomplishes much:

Your heart beats 103,689 times
Your blood travels 168,000,000 miles
You breathe 23,040 times
You inhale 438 cubic feet of air
You eat 3 ¼ pounds of food
You drink 2.9 quarts of liquid
You lose 7/8 pounds of waste
You speak 4,800 words
You move 750 muscles
Your nails grow.000046 inch
You exercise 7,000,000 brain cells

…no wonder you feel tired!

-Sermons Illustrated May/June 1989