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Complete 32 intervals of 20 seconds of work followed by ten seconds of rest where the first 8 intervals are pull-ups, the second 8 are push-ups, the third 8 intervals are sit-ups, and finally, the last 8 intervals are squats. There is no rest between exercises.



http://www.youtube.com/watch?v=QgghNOUjOK8&feature=fvsr

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