On Sun, 02 Aug 2015 21:37:36 +0100, Caecilius
wrote:

I'm a nervous flyer who spends a lot of time as a commercial aircraft
passenger. My number one anxiety is that freefall feeling when the
plane drops, like you'd get on a rollercoster (I don't like those
either).

[snip]

Caecilius, here's something you might want to try. Get on a roller
coaster, and at the first drop, note what your stomach muscles do:
they probably clench tight. On the next drop, consciously FORCE them
to relax, and I'll bet you find it better. By the end of the ride, you
may feel you've whipped a demon.

rj