Fact 1: If an animal sweats then that animal 's bodily water decreases.

Fact 2: Human beings are group animals.

Given the two facts above, answer the question "What reduces a human's bodily water?" with the following options: 
- flying
 - steroids
 - fishing
 - evaporation
 - sugar
 - sweating
 - reading
 - Roundworms.


 

      sweating   