If movement designed to work a specific muscle or has a positive impact on a human 's health, then what does movement designed to work a specific muscle or muscles do?

Answer choices:
- Positive impact on health.
 - It helps them survive
 - Muscle atrophy.
 - Graphic design.
 - To keep their body heat.
 - preventing heat transfer
 - Interpretive movement.
 - heat is produced

 

 Positive impact on health.         