I personally started using one of those foam rollers about 2 years ago, I lay down and balance with my spine trying not to touch the ground, do 10-20 situps, those side situps that work your obliques, leg raises, then just 30 seconds of hands and feet straight out, all that while trying to balance on the roller, amazing core workout...I was just wondering person opinions/experiences you guys have had seeing as how there's been a lot of "6 pack abs" posts lately