I know many of you love P90X so I thought I would give you my thoughts on the new version. (P90X 2). It's really hard like its predecessor but focuses more on your core. Great if you're into sports or simply need a change of pace from the original( which I still prefer) but it's definitely challenging and wll greatly increase your fitness level. (and your balance!) Btw...Ab Ripper in X2 is far better!