[Source](http://fermatslibrary.com/s/self-control-relies-on-glucose-as-a-limited-energy-source-willpower-is-more-than-a-metaphor "Permalink to 
Fermat's Library | Self-Control Relies on Glucose as a Limited Energy Source: Willpower Is More Than a Metaphor annotated/explained version.
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Fermat's Library | Self-Control Relies on Glucose as a Limited Energy Source: Willpower Is More Than a Metaphor annotated/explained version.