06/03/2026
Why decision making burns energy!
We all think of energy being used when we do something physically active like go to the gym, for a run, a hike or running after a small child that just won’t settle down….
But energy is used in multiple ways in the body. One of the most physically exhausting things you can do is make decisions. Have you ever had that moment at 5pm where everyone in the house needs feeding, there is food available in the house, but you just can’t think what to make?
Yeah…. Been there - and i’m a nutritionist!!
Every decision your brain makes requires communication between brain cells, and one of the main neurotransmitters involved in that process is glutamate.
The more stimulation, stress, multitasking and decision making… the more glutamate activity the brain has to manage.
And that process is energy demanding.
This is one reason chronic stress can leave you feeling mentally exhausted, overwhelmed and “wired but tired.”
Sometimes the problem isn’t laziness.
Sometimes the brain has simply been “on” for too long.
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