This 5-minute ab finisher is the reincarnation of P90X’s ab ripper—and it builds a stronger, leaner core

With more built-in recovery and zero drop in intensity, Waz Ashayer says this new program may be the most extreme home ...
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Shelter in Shape: Ab Ripper Flex

AUSTIN, Texas — Today's workout is called "Ab Ripper Flex" – a combination of the popular P90X workout "Ab Ripper X" with two other exercises in a total of three rounds. Begin with a one-minute wall ...