Does old morning advice beat new? A Lindy test of 12 wake-up habits

Yes, mostly: for wake-up advice, age is a usable first filter, because practices that have survived for centuries have usually survived for a reason. It is a filter, though, not a verdict — some old advice persists out of inertia. Some new advice turns out to be a repackaged old idea.

Where did the Lindy effect come from, and what did it originally say?

The name comes from Lindy’s, a Manhattan delicatessen where comedians reportedly gathered after their shows. In 1964 Albert Goldman wrote a piece in The New Republic called “Lindy’s Law.” Goldman’s version ran the other way from the one now quoted: he reported a piece of deli folklore that a television comedian’s career length was inversely related to exposure, because a comic’s supply of material is fixed and heavy airtime burns through it.

The flip came from Benoit Mandelbrot, who in The Fractal Geometry of Nature (1982) described a version in which the longer a body of work has already lasted, the longer it can be expected to keep going, on average. Nassim Taleb then took it into general circulation in Antifragile (2012), applying it to books, technologies and ideas. The popular rule is a mathematician’s reversal of a deli joke.

What does the math actually require?

The clean version rests on a heavy-tailed (Pareto-type) lifetime distribution. If lifetimes follow a Pareto distribution with shape parameter α greater than 1, the expected remaining life of something that has reached age t is t/(α−1). At α = 2 that is exactly t, which is the “it will last as long again” statement.

Two conditions follow. The rule applies to non-perishable things, such as ideas, texts and techniques, and not to anything with a built-in expiry like a person, a battery or a carton of milk. And it describes averages across many items, so it says nothing certain about any one habit. Toby Ord’s 2023 arXiv paper “The Lindy Effect” examines how much the result depends on those assumptions. A wake-up practice is closer to an idea than to an organism, so the rule can plausibly apply, though that is a judgment call.

How do 12 pieces of wake-up advice score?

Ages are approximate, since most of these practices have no birthday. The evidence column is my own judgment, on a 1 to 5 scale, from how well the practice is supported by sleep and circadian research, not from a formal review.

#	Advice	Approx. age	Evidence (1-5)
1	Rise with daylight	Prehistoric	4
2	Fixed rising time	1,500+ years (monastic rules)	5
3	A bell or similar outside call	1,000+ years	3
4	Walk after waking	Prehistoric	3
5	Open the curtains or step outside early	Prehistoric	4
6	Morning coffee	About 500 years	4
7	Splash cold water on your face	Centuries	1
8	Snooze button	About 70 years (1950s)	1
9	Dawn-simulating wake-up light	About 40 years (1980s research)	3
10	Sleep-stage “smart” alarm	About 10-15 years	2
11	The 5 AM Club	About 8 years (Robin Sharma, 2018)	1
12	Cold plunge or ice-water ritual on waking	A decade or so as a trend	1

The pattern is visible. Rows 1 to 5 average 3.8; the four newest practices without an old root (rows 8, 10, 11 and 12) average 1.25. Rows 1, 2 and 5 match what circadian research would predict, since light and regular timing are the main inputs that set the body clock.

Why does a fixed rising time hold up so well?

A consistent wake time anchors the circadian rhythm, and a fixed rise time is a standard component of CBT-I, the non-drug treatment for insomnia. Monastic rules fixed a rising hour long before anyone measured melatonin. When a 1,500-year-old practice is also in a clinical protocol, the filter and the evidence agree. The mechanics are in the wake-time anchor post.

The bell is the interesting case. A bell is an outside signal that rises on a schedule and that your neighbors also hear, so it works partly as a timer and partly as a social fact. I know of no trial on church bells and sleep, hence the 3. But “someone besides me expects me up at this hour” is among the oldest wake-up technologies there is, and it is in the same family as the commitment devices people used long before apps.

Where does the Lindy filter fail?

Row 8 is the counterexample: the snooze button is about 70 years old, nearly universal, and the evidence for it is poor. Age can mean that something works, or it can mean that it is convenient, easy to sell and hard to dislodge. Medicine kept bloodletting for around two thousand years, so persistence alone cannot be treated as proof.

Some practices are old in spirit and new in form. Row 9 mimics the sunrise, the oldest cue there is, with technology about forty years old, and row 12 is a modern take on ancient cold bathing. Your sorting may differ from mine.

Finally, conditions change. Rising with the sun made sense when the sun was the only light. Electric light, shift work and latitude have all moved the baseline, and the sun’s own schedule drifts through the year, as this computed look at the latest sunrise shows. A Lindy-approved habit still needs to fit your actual morning.

How should you use the filter?

Use age to rank, then check the mechanism. Ask how long people have done a practice and what it would do to your body clock or alertness. Old and mechanically plausible goes to the front of the queue; new with only testimonials behind it can wait.

If you apply the filter to your own mornings, the oldest item with real teeth is the outside call. DontSnooze is an iOS alarm app that is a modern version of that: it gives you 30 seconds after the alarm to film a short clip showing you are up, and if you miss the window a random camera-roll photo goes to your friends in the app for 48 hours. Watching friends is free; posting your own proof needs Pro.

Start with the three cheapest old habits: one fixed rising time, daylight within the first hour, and a short walk. They cost nothing, they have the longest records, and they are the ones with the most support behind them.