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Chemistry for Breakfast: The Amazing Science of Everyday Life by
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Claire
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According to the particle model, every substance in the universe is made up of particles.
How well we wake up in the morning is largely determined by two molecules. We need less of one - melatonin - and more of the other, the stress hormone cortisol.
A hormone is nothing more than a messenger substance, a molecule that carries important information.
— Mar 19, 2026 10:27AM
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How well we wake up in the morning is largely determined by two molecules. We need less of one - melatonin - and more of the other, the stress hormone cortisol.
A hormone is nothing more than a messenger substance, a molecule that carries important information.


















