What advice can i give to my millenial peers who refuse to take social distancing seriously?

Mask and hand wash: To wear a face mask all the time and wash hands after a social contact in every opportunity and avoid crowds. Self quarantine yourself if you develop any symptoms and contact to your doctor for follow up.

To consider others: Good question. COVID-19 is not that serious for most millennials, but some millennials can become very ill from it. But the best reason for them to take prevention seriously is that if they get it, even if they develop few or no symptoms,they might spread it to other people who could become seriously ill or even die from it. Thus they should do this out of concern for others if not for themselves.