Read the following context and choose the best option to answer the question.
Context: I did n't know they only played the initiation video once , or I would ' ve paid much closer attention . I remembered Pastor Rush playing it over and over again until the end last year , but I may be wrong . I started running outside yesterday , and I like it a lot better . It 's harder , but it 's much cooler outside !
Question: Why do they like to run in the cooler air ?
Options: 
- They do n't sweat as much .
 - They do n't have to run as long .
 - They can stop and rest .
 - They know shortcuts to take outside .


They do n't sweat as much .