As a travel writer for over 30 years I've had to push myself to do some out-there things: racing in a formula one car at 150 mph, taking to the air in everything from balloons to gliders to blimps. Trekking through jungles, walking through tough neighborhoods, I've usually sucked it up.
Fear can be a long, drawn-out ache, such as waiting for medical test results. And sometimes it is unexpected -- a sharp rush of adrenaline on an otherwise uneventful day. Maybe the fear lasts a few seconds, but it calls upon our mind and body to flee or fight.
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