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legshot420 · 01-10-2008, 03:31 AM

sorry to hijack this thread, but which are better, crunches or full sit-ups? i heard from someone that sit-ups are bad for your back.

01-10-2008, 03:31 AM	#6 (permalink)
legshot420 Registered User Join Date: Jan 2008 Posts: 8	sorry to hijack this thread, but which are better, crunches or full sit-ups? i heard from someone that sit-ups are bad for your back.