Why nerves misfire when you only drink water
A nerve fires on a sodium gradient. Drinking only water during long effort can wash that gradient down.
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Biochemistry field notes from Signal Cascade
Hormones, neurotransmitters, mitochondria — careful notes on the molecular machinery of everyday life, written in plain language.
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Cold hits the nerves first and the thyroid later
The first response to cold is sympathetic. Thyroid hormone turnover changes on a slower clock than shivering.
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Lactate is a fuel, not the thing that burns
Working muscle ships lactate as a fuel other tissues can oxidize. The burn is not lactate acting as a toxin.
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What an orgasm changes in the next hour
After orgasm, prolactin often rises and oxytocin can rise with it. The next hour is a hormone shift, not a cure.
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Daylight, brain serotonin, and the gut's separate pool
Morning light reaches brain serotonin through the eye. The gut's serotonin does not commute upstairs to become a mood.
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A late meal and the next morning's insulin
Eating late lands the meal when insulin sensitivity is already lower, and the next morning still shows it.
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