Put me down for hypervigilence as well. I find it ebbs and flows with my overall stress. But there are still basic things that have to be in place. I check all the doors and locks before going to bed - no need to check the windows because they are NEVER to be opened! I check the garage and the yard. I have weapons strategically placed around my house so if something does happen I'll be able to protect myself. My fiance also has PTSD and we're going to try to start taking martial arts classes when we can, as well as survival classes. Because other things can happen too, y'know? Fires, car breakdown, an attacker, the zombie apocalypse (I'm only half-kidding). I fret at night about how I can get my cats out of the house safely if there's a fire. Because, don't you know, cats die of smoke inhalation a lot faster than humans do because of their temperature regulation system.
It even ties into my agoraphobia. Everyone is out to get me, so no one is safe. If I mispeak, express wrong, or do something out of sequence I just may piss everyone off and then that's a freaking MOB. What if something happens to my house while I'm gone? What will I do? What if someone breaks in and lets my cats outside (I don't have kids, so it's cats - I know, crazy)?
I have to take up long distance running, too, but I have a really bad knee, so I'm not sure how to do that. But I KNOW I need that skill.