CDC Flu Page

https://templatearchive.com/the-flu-what-to-do-if-you-get-sick/

Flu Prevention – Everyday Activities

http://www.cdc.gov/flu/pdf/freeresources/updated/everyday_preventive.pdf

Exercise when you have a cold

http://www.webmd.com/cold-and-flu/cold-guide/exercise-when-you-have-cold

Clinical Study of Exercise and Cold Prevention

http://www.ncbi.nlm.nih.gov/pubmed/24921030