Knitting is so slow that we see the beauty inherent in the act of knitting. The sweater may not get finished for many months—thus, we make our peace with the unresolved nature of life. We slow down as we knit. Our breathing and heart rate drop, and knitters who have been at it a while experience a trancelike state that provides the same benefits as other forms of meditation.
--From Zen and the Art of Knitting by Bernadette Murphy