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DAREBEE Workout: What it Works
Abs power everything. They facilitate every movement. They amplify the power the body can generate. Extreme Abs is a difficulty Level V workout that will make you say "ouch!". It is worth it in terms of the results it delivers not just in the way you feel, but in the way you do anything! 
Extra Credit: Keep the plank from #4 to #5. 
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