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View Full Version : Crunches bad for back?



bbsitum
01-21-2012, 06:37 PM
http://www.thedailybeast.com/newsweek/blogs/the-human-condition/2009/06/03/stop-doing-sit-ups-why-crunches-don-t-work.html
Any one opinion? Especially about limited number of back bending in life.