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CrossFit Black Ridge – CrossFit Back Squat (10 rep max) In 20 minute establish a 1×10 max Metcon (AMRAP – Reps) In remaining class time establish a max effort time held of: 1-single arm hang from pull-up bar (right and left arm both) 2-hand stand hold 3-hollow hold 4-wall sit *wall sit– hands or arms…