some humourless w^nk#r who doesn't like some of us due to posts we made, and he red thumbs all my posts. One of the regular trolls I think.
Anyway serious answer: it puts my back "in".
If I don't sail for a month I get a couple of vertebrae in between my shoulder blades that slip out and cause pain. One sail fixes it... but no other stretch or anything puts 'em in. Weird but kinda cool excuse to sail