Fact 1: Exercise has a positive impact on a human 's health.

Fact 2: Every workout is as much an intellectual exercise as a physical exercise.

Given the two facts above, answer the question "What has a positive impact on a human 's health?" with the following options: 
- tuna
 - viruses
 - workouts
 - food
 - stamina
 - worthlessness
 - oysters
 - overwork


 

   workouts      