Hello all,
I have been doing the p90x ab ripper x and it has been going great, however I recently came across a number of articles on line indicating that crunches are for the most part overrated and can actually harm your vertebrae.
The articles mention that in comparative studies swiss ball rollouts and plank type holds engage the abs more so than crunches.
So the question is do any of you have any opinions on the swiss ball rollouts and their effectiveness on sculpting abs and if so would you recommend them over crunches?
Also seem to me that the swiss ball rollouts are just a variation on the old school ab wheel.
So in the end what is best for abs? Cruches? Swiss ball rollouts? or the ab wheel?
-Cheers