@60sRefugee @nyrath yeah. I have pointed out before that most of the silly-sounding nuclear advice like this (and "duck & cover") was clearly written during the period where we were expecting one Hiroshima per major city, and the advice would indeed help you not get flashblinded or have windows explode in your eyes. It just aged poorly as both sides built thousands of icbms.
And yeah, it didn't help if you were close enough to get vaporized, but... What advice would?