Putting a few numbers in your phone is something I did and would recommend to others in whatever city is relevant. These can of course come in handy regardless of whether you practice mindfulness meditation.

My point was that the context of a class on loving-kindness was especially jarring. I fully advocate for everyone to take a class on basic first aid and know who to contact in response to a few basic classes of emergency, that seems as basic as having clean water in your house in case of an earthquake.

I can perform CPR, stop blood loss within reason, or call someone that knows how to do things I don't. I'm very happy to take suggestions for other skills that should be commonly known to be good community members.

https://sfgov.org/dosw/mental-health-services