The 15-Minute Lumberjack Workout That Builds Explosive Power and a Rock-Solid Core

Try it as a standalone core workout, or at the end of a lift as a finisher.
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9 exercises to strengthen your core and ease pain

Medically reviewed by Mallory Christopherson DC, FMT, CSCS Side planks trains your obliques with movements like twisting and rotating. Leg raises help strengthen your lower abs and hip flexors, but ...