Caffeine: The Good, The Bad, and The Ugly
Caffeine is one of the best-studied drugs on earth and most of what it does is good. The problem is not the molecule. It is the...
No Curfews
What the research actually says about caffeine, decaf and the second half of the day.
Filed under caffeine-sleep Clear
Caffeine: The Doom Loop
The 4pm coffee that props you up is the same coffee that costs you the sleep that made you need it. The loop is self-sealing, and...
Does Coffee Actually Help You Focus, or Just Un-Tired You?
Coffee mostly restores the focus you lost to tiredness, not focus above your baseline. Here's what caffeine really does to concentration, and the smarter play.
Caffeine Withdrawal: A Day-by-Day Timeline (and How to Skip the Worst of It)
Caffeine withdrawal starts in 12 to 24 hours, peaks around day two, and clears in 2 to 9 days. Here's the day-by-day timeline, and the taper...
Does Coffee Dehydrate You? What the Research Actually Shows
Does coffee dehydrate you? At normal doses, no. The water in the cup offsets the mild diuretic effect, so your coffee counts toward daily hydration.
What Caffeine Does to Your Deep Sleep, Even When You Fall Asleep Fine
You can fall asleep after coffee and still lose deep sleep. What caffeine does to sleep architecture, and why decaf protects the rest you think you...
How Caffeine Actually Works: Adenosine, Dopamine, and the Crash Nobody Warns You About
Caffeine doesn't add energy. It blocks adenosine, your tiredness signal, and the backlog crashes you later. Here's the real mechanism, and the fix.
How to Quit Caffeine Without the Misery
Quitting caffeine has a reputation for being uniquely miserable. Headaches that last for days. Brain fog that makes work impossible. Mood drops that strain relationships. Fatigue...
The Best Time to Drink Coffee: A Schedule That Actually Works
Coffee timing is one of the most underweighted variables in daily coffee drinking. Most drinkers consume their coffee on autopilot: a cup with breakfast, another mid-morning,...
Decaf Coffee Health Benefits: What the Research Actually Supports
The cultural conversation about coffee health benefits has historically focused on caffeinated coffee. The various claims (improved cognition, lower diabetes risk, reduced Parkinson's incidence, lower mortality...
Decaf for People With Anxiety: When Coffee Is the Anxiety
A large percentage of adults dealing with anxiety symptoms are also daily coffee drinkers. The relationship between caffeine and anxiety is direct, well-documented in psychiatric research,...
Decaf Coffee and Blood Pressure: What the Research Actually Shows
A meaningful percentage of adults have high blood pressure. The American Heart Association estimates 47% of American adults meet the definition of hypertension (130/80 or higher)....