[hhmc]

I once did a course with a paramedic on basic aid. We were discussing choking, which is a condition that really needs a 2nd party to intervene. Someone asked what to do if you live alone (with no close neighbours) - the answer was essentially ‘good luck’

[magneticnorth]

The idea of the heimlich is to put sudden force on the diaphragm and force air upward. You can do that alone by pushing your upper abdomen against a chair back, counter, railing, whatever. Not something I've ever tried, but good to know about in case.

[inciampati]

And if you're alone it's worth running with a chair into the street to do it as visibly as possible.

[hhmc]

Sure theoretically. Outcomes are dramatically better if someone else is around

[vkou]

Most people don't know how to do a self-heimlich.

[mh-]

I know how to in theory, and I think I'm probably "above average" at calm-in-crisis, but my confidence that I'd calmly rescue myself via self-heimlich while unable to breathe is not high.