
This finding might also help explain the obesity epidemic of an increasingly sedentary society in which people still have to think now and then.
Researchers split 14 university student volunteers into three groups for a 45-minute session of either relaxing in a sitting position, reading and summarizing a text, or completing a series of memory, attention, and vigilance tests on the computer.
The researchers figure the body reacts to these fluctuations by demanding food to restore glucose, a sugar that is the brain's fuel. Glucose is converted by the body from carbohydrates and is supplied to the brain via the bloodstream. The brain cannot make glucose and so needs a constant supply. Brain cells need twice as much energy as other cells in the body.
Hmm...that makes sense, actually.
Yes. it is really very logical.
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