I Tried the 4-7-8 Trick to Fall Asleep Fast -- Here's What Happened

Have you heard of the "4-7-8" breathing method? I hadn't until references to it kept popping up in my Facebook feed. I ignored them at first, but the positive endorsements from friends and friends of friends ("works for me every time!", "did it last night and it worked!") were a siren song that I couldn't resist.