Fact 1: Exercise increases a body 's strength.

Fact 2: Exercise is more than running and lifting.

Given the two facts above, answer the question "what increases a body's strength" with the following options: 
- in its arms
 - Through play
 - heat energy
 - joules
 - Riding a bike
 - cancer
 - running and lifting
 - parasites


 

       running and lifting  