It’s flu season. Watch out for people that are contagious. That is, unless they just have contagious behavior.
Communicate with an English teacher or writer and you’ll catch their proper grammar. That’s contagious behavior.
Hangout with me enough and you’ll catch my healthy and smart eating habits. That’s contagious behavior.
Meet with highly punctual colleagues and you’ll start being on time, too. That’s contagious behavior.
One could argue that catching something that’s contagious is not a choice. But with contagious behavior (good or bad, unfortunately), choosing not to catch it eventually makes you feel like an idiot. And as the group grows, the contagious behavior becomes an epidemic.
Go catch something good.