1. Muscular and Digestive Systems
Mason Clark, Jacob Howard, Neil Madadi, Max Smith

2. Digestive System We make 1 to 3 pints of saliva a day.
The average male will eat about 50 tons of food during his lifetime in order to sustain a weight of 150 pounds.
Food stays in your stomach for 2 to 3 hours.
Flatulence gets its smell from bacteria.
Cells along the inner wall of the stomach secrete roughly 2 liters (0.5 gallons) of hydrochloric acid each day.

3. Muscular System Muscles make up more than half your body weight.
It takes over 200 muscles working together just to walk!
Your body is made up of approximately 696 muscles.
The strongest muscle of the body is the masseter muscle used for chewing.
If all your muscles could pull in one direction you could create a force of 25 tons!

4. Reproductive System
Some people are born with two uteruses.