Why we feel sleepy after eating meals
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Explanation:

Blood flow to the small intestine “dramatically increases” after a person eats, says Dr. Tomonori Kishino, a professor of health science at Japan's Kyorin University. And as blood is pumped into the gut to fuel digestion, a corresponding drop in blood flow to the brain could trigger feelings of sleepiness, he says.

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explanation:

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.