I got into a complete mess when re-jigging my fifth sentence.
Here's my previous message again with a corrected second seentence:
<<<<
Here's an observation which may be of interest to biology-inclined FWers. I
am at a fairly advanced stage of emphysema. For example I'm breathess after
about five yards of walking -- before then, if I'm carrying anything. I'm
attached by a long thin tube which delivers oxygen-rich air.to my nostrils
from a machine sitting in another room. Until taking to snuff five years
ago, I was a heavy smoker all my life and am still additcted to nicotine.
When I want a sniff I pull the O2 attachmeent away from my nose and park it
elsewhere. If I'm sleeping or if I'm sitting quietly (reading an easy book
or watching TV) I can exist quite happily without O2 for two or more hours
-- and also forget all about snuff! However, if I turn to writing an
e-mail, I find, after no more than a minute, that I'm going breathless and
feel faint. So I quickly have to re-attach myself to O2. Although it's
well-known that the brain requires something like 20% more O2 than the rest
of the body (even while walking) my discovery means that different sorts of
brain activity require different oxygen levels. If this is trivial comment
for any FWers at least you know that my brain is working when I write to
FW! How about yours?
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