Substitution for P90X?    Tracy Anderson Method --                                     DO 3 REPS OF THE FOLLOWING:         50 crunches      20 squat jumps      1 minute plank      2 minute wall sit      30 side crunches, each side      20 roll- back- and- jumps      20 v- ups      150 calf raises; 90 regular, 30 right leg, 30 left leg
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