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Biology. Leisure. Food. Lol. Physics. Pics. Sport. Quick Core Workout. Updated July 16, 2015.

Quick Core Workout

Written or reviewed by a board-certified physician. See's Medical Review Board. Core Exercise 1: The Plank This quick core routine begins with the plank exercise. The plank provides a great warm-up that engages all the muscles of the core: the rectus abdominis, the internal and external obliques, transversus abdominis, the hip flexors, the erector spinae and multifidus.