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Place a band horizontally and drive your knee up into the band as fast as you can. Perform for 60 Sec.
Up Next in Day 4
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bleacher series
Perform each of the following 3x. Every other step as quickly as possible. Every step with just your right foot. Every step with just your left foot. Jump up the stadium with only two feet on the seats. As safely as you can go backwards up the stairs going as quickly as you safely can.
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Exercise Ball Abs
With your feet elevated, and an exercise ball beneath your forearms extend your arms forward and then back. AMRAP.
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Proper Ab Crunches
Low back supported with frog legs focused on lifting the chest into the air. Perform 50x
