In a response similar to that displayed by cells, humans unavoidably restrict their growth behaviors when they shift into a protective mode. If you’re running from a mountain lion, it’s not a good idea to expend energy on growth. In order to survive—that is, escape the lion—you summon all your energy for your fight-or-flight response. Redistributing energy reserves to fuel the protection response inevitably results in a curtailment of growth. In addition to diverting energy to support the tissues and organs needed for the protection response, there is an additional reason why growth is
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