I have passed out exactly once in life, a long time ago. I was in high school. I wasn’t feeling well and had to have my blood drawn at the clinic so they could try to figure out what was going on. My mom and I were standing at the elevator and the next thing I knew I was waking up minutes later with strange people surrounding me and my face being slapped. I don’t remember anything about it and had to be told that I passed out.

Last night at around 10pm, my tongue swelled up on one side. I battled it with the antihistamines I was given for just this purpose... crushing them up so I could use a straw shoved back in my mouth to swallow them. I had my epi-pen ready just in case. I passed out around 7:30am. I remember the alarm going off to feed the cats. I remember coming back up stairs. And then... nothing. I woke up at 11:05, kinda half in bed. My tongue and the floor of my mouth still swollen a bit. Lips a little swollen too, which was new. But there was no pain, which was nice.

Passing out is so weird. One day I’m going to have to read up on the science about it. The thing that bugs me about it is not the losing consciousness, but the memory loss. I don’t remember ANYTHING. So weird!

And then...

...I remembered that I had my Apple Watch on, and it had recorded everything.

And the data it had collected is interesting...

As you can see from the above, I nodded off a little after 1:00am. Then I was wide awake (or being still) around 1:30am. I finally drifted off to sleep around 5am when the antihistamines I had been chugging all evening started to work. I was awakened from a deep sleep at 7am when the Alexa alarm went off to feed my cats breakfast.

And then...

I only thought that I passed out at 7:30am. What happened is that I passed out again immediately after I got back upstairs to my bedroom. And you can see it. No blue bars where I was drifting off into sleep... just an immediate crash from green to purple when I lost consciousness. Something I've never seen before.

Now, from a health standpoint, this is kinda scary.

But from a technical medical standpoint? How cool is that?!

The rest of the day was rough. I managed to go into the office, but my tongue was still swollen a bit, so it was not a comfortable experience for me. I think I may have even drooled during a Zoom meeting?

It's so hard to tell. Apple Watch doesn't record that information. Yet.