Wed, 29 Sep 2004 15:17:23 -0700, ,
Bill Baka wrote:

It could be one of 3 things.
1. Riding and staying in shape.
2. Lucky genes inherited.
3. Not being a germaphobe.

It's picking your nose and eating the boogers that boosts your immune
system.

http://www.ananova.com/news/story/sm_903083.html
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zk