Meditation can be practiced while walking or doing simple repetitive tasks. Walking meditation helps to break down habitual automatic mental categories, "thus regaining the primary nature of perceptions and events, focusing attention on the process while disregarding its purpose or final outcome...... This type of active meditation is a type of vipassana meditation
references for the curious:
http://www.theosociety.org/pasadena/sunrise/53-03-4/as-rooke.htm
http://en.wikipedia.org/wiki/Meditation
http://800000nails.blogspot.com/2008/07/effects-of-repetitive-motion.html
http://www.dhamma.org/en/vipassana.shtml
