Guides

A cup of green tea beside a dish of matcha powder, loose dried tea leaves and a fresh tea sprig on a wooden table
NeuroMatcha

What Is L-Theanine? Benefits, Dosage and Food Sources

L-theanine is an amino acid found mainly in tea. What research shows for stress, sleep...
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A glass of water and a plate of toast on a coffee table beside a sofa with a folded blanket in dim evening light
Asian Flush

How to Sober Up: What Works and What Doesn't

There is no way to sober up fast: your liver clears alcohol at its own...
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A wine glass with a little red wine left beside a glass of water and a set of car keys on a kitchen counter at night
Asian Flush

How Long Does Alcohol Stay in Your System?

Your liver lowers blood alcohol by about 0.015 g/dL per hour on average, so a...
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A glass of water on a bedside table beside rumpled bed sheets in soft morning light
Asian Flush

How Long Does a Hangover Last, and What Actually Helps?

A hangover peaks as blood alcohol returns to about zero and can last 24 hours...
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A hard-boiled egg cut in half beside a whole brown egg, a bowl of black beans and broccoli florets on a wooden board
NeuroMatcha

What Is Choline? Why You Need It and Where to Get It

Choline is an essential nutrient for acetylcholine, cell membranes and the liver. How much you...
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Ceramic bowls of dried herbal roots, whole ginseng roots and reishi mushroom slices on a linen cloth in soft daylight
NeuroCoffee

What Are Adaptogens? What the Evidence Shows

Adaptogens are herbs said to help the body adapt to stress, but the term is...
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A glass of iced cold brew beside a steaming cup of hot black coffee on a wooden counter, with a dish of coffee beans behind
NeuroCoffee

Is Coffee Acidic? Coffee, Acid and Your Stomach

Coffee is mildly acidic, with a pH of about 4.85 to 5.13. How cold brew,...
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A cup of black coffee and a glass of water on a kitchen table beside an empty plate with a fork in morning light
NeuroCoffee

Can You Drink Coffee While Fasting? What Breaks a Fast

Black coffee has about 2 calories a cup, so most intermittent fasting plans allow it....
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A rolled blood pressure cuff and its tube on a wooden kitchen table beside a steaming cup of black coffee
NeuroCoffee

Does Caffeine Raise Blood Pressure? What the Research Shows

Caffeine raises blood pressure for a few hours, but the effect is smaller in many...
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A person on a sofa with eyes closed and fingertips pressed to their temple beside an empty coffee mug in soft morning light
NeuroCoffee

Caffeine Withdrawal: How Long It Lasts and How to Ease It

Caffeine withdrawal usually starts 12 to 24 hours after your last dose and lasts 2...
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A cup of black coffee on a wooden kitchen table with a wall clock behind it showing late afternoon
NeuroCoffee

How Long Does Caffeine Stay in Your System? Caffeine Half-Life Explained

Caffeine has an average half-life of about 5 hours, but it varies widely. How long...
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A person resting their head on one hand at a desk beside a half-finished cup of coffee in afternoon light
NeuroCoffee

Why Does Coffee Make Me Tired? What the Research Says

Caffeine blocks the sleepiness signal but does not remove it. Why poor sleep, late-day coffee...
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