How can you get the flu really easily?

You cannot "easily get" the flu. The flu is a highly contagious respiratory illness caused by influenza viruses that primarily spread from an infected person to others through respiratory droplets, which are produced when an infected person coughs, sneezes, or talks. To prevent getting the flu, it is recommended to take precautions such as getting a flu vaccine, practicing good hygiene (e.g., washing hands frequently, covering mouth and nose when coughing or sneezing), avoiding contact with those who are sick, and staying home when ill.