Re: 2-3 second rush through body
That's interesting, the first time I had one of those I was on the computer as well. I assumed it was posture related or eyes. The second time I had one it turned into a full blown panic attack because I freaked out. Now I have them when I'm highly anxious but they come and go like yours did. Just a split second to scare the crap out of me.
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Do it afraid. All fear is but the notion that God's love ends. "When anxiety was great within me, your consolation brought me joy." Psalm 94:19