why not to do sit ups and crunches Post author:Cannon Performance Post published:March 2, 2010 Post category:General News http://www2.macleans.ca/2010/01/19/the-man-who-wants-to-kill-crunches/ as i have been saying to folk for some time now. You Might Also Like Why you should have a plan August 19, 2014 Take advantage of the warm up August 19, 2016 The One A Into the West April 30, 2013
