Since about year 12 I've had sound playing at night. First classical music, then a fan then white noise on a smartphone. The mix I use the most is heavy rain, thunder and train, over 400 days total runtime.
Tonight there was a storm and great flashes of lightning ripped. I didn't know how close a peal would follow and my fight flight kicked in, having to gird myself on each for a likely loud as holy fuck noise sent by the universe to smote me.