Caffeine Half-Life vs Sleep Pressure: Which Wins at Night
Caffeine sleep pressure, and the argument between them: how a 4 p.m. latte blocks adenosine, hides the receipt, and quietly reshapes the second half of your night.
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Sleep guides - page 68
What the Lunchtime Walk Fixed: A Desk Worker Story
Dave's 2:40 wall softened after three weeks of lunchtime walks, and his nights got deeper as a bonus. What the walk fixed, week by week, and how to run the test.
A Night Nurse's Guide to Daytime Sleep
A night nurse's guide to daytime sleep: the anchor sleep block, the cave-dark room, and the honest limits of sleeping against the body clock.
The 10-Day Caffeine Reset for Better Sleep (How to Do It)
A 10-day caffeine reset that finds your real cutoff without going cold turkey. Taper, decaf swap, milligram audit, and what a null result means.
How Long It Takes to Recover From Social Jet Lag
Social jet lag recovery time runs about a day per hour of weekend drift. The honest fix is cheaper: one anchor wake time, seven days a week, Saturdays included.
Nina Moves Her Run and Keeps Her Walk
Nina trained for a half marathon at 8:40 PM and lay awake listening to her pulse. Moving the run to 6:30 AM kept her fitness and handed the evening to a walk.
Sleeping Near a Window: Problems and Fixes
Sleeping near a window means light leaks, drafts, and noise reach you first. The honest problems, the cheap fixes, and when the window is the least of it.
The Evening Exercise Myth: Where It Came From
The never-exercise-at-night rule fails when researchers test it. Where the evening exercise myth came from, what survives scrutiny, and the honest timing rule.
The Sleep-Exercise Loop: How Each Improves the Other
The sleep exercise loop runs both directions: movement deepens the night, and deeper nights make movement easier. Here's how to start the loop from either end.
Why Sleeping In on Weekends Makes Mondays Worse
Why sleeping in makes mondays worse comes down to social jet lag: your weekend drift resets your body clock, then Monday charges you for the flight.