STS Ab Circuits or Core Max?

in core max you only use the stability ball and madicine ball and no equipment,it's a good workout but in ab circuits you use vasious equipments,you use also weight and plates
 
Another vote for Ab Circuits! As far as Core Max, I just DVR them from fit t.v and fast forward through commercials when I want to do them. (if you have that option) :)
 

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