How do you use your 45 seconds?

At 45 seconds, load up social media. (although I actually missed the warnings this time, was focused on work) At least assuming the number is only 7.x.

If it were 8+ or somewhat closer, I'd get under my desk. (then pull up social media on my phone)

Standing underneath a doorframe is also advisable.

I'm pretty sure that is advice from the last millennium that is no longer taught.

If it's a big one and it's near you, you'd move away from the windows and heavy things that can fall, I suppose?

For me I always just turn on iPhone screen recording and marvel at this amazing app and wish we had something like this in California.

We do - gave me a few second warning of a 4-point one a month or so ago

https://apps.apple.com/us/app/myshake-earthquake-alerts/id14...

Stop any trains. Open elevators at nearest floor.