Yeah i have a old knee injury.The first  couple times it really hurt , i had to hit the pause button. after a few weeks though it dosent hurt like it did.You can do the cardio disc instead of the plyo if your unable...

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Starting Score: EQ 729 TU 727
Current Score: Ex (AMEX) 765 EQ 734 TU 736
Goal Score: 780+

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