(When you have a marshmallow core) Stir the Pot and Regression/Progressions |
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A proper assessment is important if one wants to build ultimate strength. The core is a general weakness. You cannot control distally in an optimal
Manner if you have a jelly donut core. A core of iron must be built and is not easy. Next time someone says they have a sufficient core and planks are too easy, give this a try and see where they stand. |