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One Response to New Ab / Core Training Progressions

  1. Lyn says:

    Thanks very much for this article. I’m a big fan of the plank and plank progression. could you please explain why not to perform the plank in excess of 1 minute? also, recently i was watching a video on you tube of coach jonathan chaimberg training some athletes and he was getting them to perform side plank in 5 second bursts (hold plank for 5 seconds then down back up and repeat) could you please explain this form of the excercise?

    Thank you.