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Matt Walker engagement report

@sleepdiplomat - 439K followers on X

Measured over 8 original posts from a 30-day window, last computed on August 30, 2026.

Engagement

Middle of its size range
Per follower
0.009%
of 439K followers
Per impression
0.212%
18K views on a typical post
Reach
4.33%
of its followers see a post
Typical post
39
interactions (median)
Saved
0.054%
10 bookmarks on a typical post
Posting rate
0.63/day
active 33% of days
Peak time
17:00 UTC
Monday

A typical post picks up 39 interactions against 439K followers, an engagement rate of 0.009%. Measured over 8 original posts, its engagement rate beats 28% of 4,085 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 18K times each, and 0.212% of those impressions turn into an interaction. That is about 4.20% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.63 post a day over the last 30 days, though only 33% of days saw any activity at all. Most posts go out around 17:00 UTC, and Monday is the busiest day of the week. Of the 8 posts sampled, 50% carry an image or video, 13% are part of a thread and 50% link out. The account's strongest tracked post pulled 113 interactions, about 2.9x its own typical post. Recurring topics include #neuroscience, #sleepscience, #sleep.

Measured over 8 original posts from a 30-day window, last computed on August 30, 2026. Recurring tags: #neuroscience, #sleepscience, #sleep.

Compared with accounts its own size

Matt Walker's engagement rate beats 28% of the tracked X accounts closest to it in follower count (4,085 accounts, accounts of similar size (decile 7 of 10)). A percentile is spread evenly by construction, so 50 really is the middle of that group and 90 really is its top tenth.

On engagement per impression rather than per follower it beats 17% of the same group. When those two numbers disagree, the gap is about how far its posts travel rather than how people react to them.

Where this sits in the catalog

At 0.009%, Matt Walker sits above the 10th percentile of the 39,541 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.013%.

p100.002%
p250.013%
p50 (median)0.082%
p750.441%
p902.09%
p99150.1%
Engagement rate as a share of followers, across the 39,541 accounts we have scanned enough to measure. The axis is logarithmic, because the top and bottom of this population are about 93,800 times apart and a linear axis would flatten everything below the median into a single point.
Show the percentile table
Engagement rate percentiles
PercentileEngagement rate
10th percentile0.002%
25th percentile0.013%
50th percentile0.082%
75th percentile0.441%
90th percentile2.09%
99th percentile150.1%

This ruler is the whole measured catalog, not a size-matched group: it shows where the raw rate falls across every account we can measure, all of which are large. For a like-for-like comparison, read the size-band percentile above instead. See how the bands are built

Posting timing

This account posts most often around 17:00 UTC, and Monday is its busiest day of the week. The bars below are the catalog-wide pattern, with this account's own busiest slot marked. They do not show how this account performs at each hour: we keep one aggregate per account, not one per hour, so that measurement does not exist in our data.

Engagement by hour posted, UTCTwenty-four bars, one per UTC hour. Each bar shows how posts published in that hour compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest hour: 17:00 UTC.
0003060912151821
Above the authors' own mediansBelowScale: plus or minus 6%Busiest hour: 17:00 UTC
Show engagement by hour posted, utc as a table
Engagement by hour posted, UTC
Hour (UTC)Vs author medianPosts
00:00 UTC-1%55K
01:00 UTC-2%56K
02:00 UTC-4%54K
03:00 UTC-4%58K
04:00 UTC-6%47K
05:00 UTC-4%45K
06:00 UTC-5%52K
07:00 UTC-5%56K
08:00 UTC-4%66K
09:00 UTC-4%76K
10:00 UTC-3%78K
11:00 UTC-3%85K
12:00 UTC-2%94K
13:00 UTC-3%102K
14:00 UTC-3%105K
15:00 UTC-1%109K
16:00 UTC-3%106K
17:00 UTC-2%98K
18:00 UTC-1%92K
19:00 UTC-2%87K
20:00 UTC-1%81K
21:00 UTC-1%72K
22:00 UTC-2%62K
23:00 UTC-2%56K
Engagement by day of weekSeven bars, one per weekday, Sunday first. Each bar shows how posts published on that day compare with their own authors' median engagement. Bars above the centre line ran higher than the median, bars below ran lower. A marker flags Busiest day: Monday.
SunMonTueWedThuFriSat
Above the authors' own mediansBelowScale: plus or minus 5%Busiest day: Monday
Show engagement by day of week as a table
Engagement by day of week
DayVs author medianPosts
Sunday+5%245K
Monday+1%313K
Tuesday-3%327K
Wednesday-3%275K
Thursday-2%256K
Friday-3%266K
Saturday+3%240K
See what moves engagement across the whole catalogWhat counts as a good engagement rate at this size

Best tweets

  • Jul 27, 20262.9x their median

    Deep sleep runs on sleep pressure, and sleep pressure is organised by a steady clock. ⏰ Let your wake time drift and the clock loses its grip on the deep stage. Fix your wake time — seven days a week — and protect a full 7–9hr window. It beats any capsule on the shelf. https://t.co/u5841LsuaD

    97106029K viewsView on X
  • Aug 24, 20261.7x their median

    Slide a sleeping person into a brain scanner during REM sleep and the deep, ancient regions light up — brainstem, thalamus — while the rational frontal cortex steps back. 🧠🌙 Sleep is a shift change, not a shutdown. #Neuroscience #Sleep https://t.co/ulINiRVP8z

    5934124K viewsView on X
  • Jul 6, 20261.7x their median

    We've long known sleep strengthens memory. 🧠 The newer, stranger finding runs the other way: the memories you carry to bed help build the night itself — its depth, its rhythm, its dreaming. Memory and sleep are a two-way conversation. 💤 #SleepScience #Memory https://t.co/ODv2lNNON7

    6061014K viewsView on X
  • Jun 22, 20261.6x their median

    Your eye has a light meter, not just a camera. 🌥️ A small set of retinal cells ignore images and report one thing: how bright & what colour the world is. They feed the brain’s clock, alertness & mood—not your vision. #SleepScience #Neuroscience https://t.co/69uXTe35Uk

    4986021K viewsView on X
  • Jun 15, 2026

    “Tired but wired” isn’t a fuel shortage. 🚗 Insomnia’s leading scientific model describes it as hyper-arousal—heightened activation across body, brain & emotion. You’re not failing to fall asleep; you’re succeeding, too well, at staying awake. #SleepScience #Insomnia https://t.co/PMvpe4suE1

    4674120K viewsView on X
  • Aug 17, 2026

    A drug that floods the mind with colour should light the brain up. It does the opposite. 🧠 Give people psilocybin in a scanner and activity DROPS in the default mode network — the hub of that endless inner "me." The self, turned down. #Neuroscience https://t.co/SGE2Ognjqg

    4087029K viewsView on X
  • Jun 15, 2026

    Why feel exhausted yet wide awake at 2 AM? It is not a lack of sleep pressure, but a state of physiological hyperarousal. A racing mind is reported 10 times more than a racing body. How do you quiet your mind? #SleepScience #Insomnia https://t.co/tu3NTKAf4N

    457305.7K viewsView on X
  • Jul 13, 2026

    Romantic love isn't really an emotion. 🧠 Show new lovers a photo of their beloved and the brain's reward engine lights up — the dopamine-rich VTA and caudate, the same wiring behind hunger, thirst, and craving. Love shares its address with need. 🔥 #Neuroscience https://t.co/o1z6ZLblC1

    4454124K viewsView on X
  • Jul 6, 2026

    Your memories structure your sleep. NREM sleep deepens locally over brain regions recruited for learning. Evidence shows positive memories stabilize the night, while negative ones trigger fragmentation. How did your day shape your night? 🧠 #SleepScience https://t.co/LLOZEvjN7u

    476006.9K viewsView on X
  • Aug 10, 2026

    🧠 Your brain: the cleanest engine in the body? We explore the "Glymphatic System," the brain's nightly sanitation crew. In deep NREM sleep, glial cells shrink by 60%, allowing cerebrospinal fluid to wash away metabolic waste like amyloid-beta. #SleepScience #Neuroscience https://t.co/Uu56hSMZnq

    4236112K viewsView on X

Ranked by total interactions across everything we have tracked for this account, which is a longer history than the 30-day window the rates above use. The multiple compares each post to this account's own median.

Recurring topics

#neuroscience#sleepscience#sleep#aging#brainscience

The most frequent hashtags in the sampled posts. They describe what this account writes about; they are not a performance signal, and the catalog-wide breakdown on the hub shows how little hashtag count moves.

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Reading these numbers

A typical post picks up 39 interactions against 439K followers, an engagement rate of 0.009%. Measured over 8 original posts, its engagement rate beats 28% of 4,085 tracked accounts of a similar size, which puts it in the middle of its size range rather than at either end. Posts are seen about 18K times each, and 0.212% of those impressions turn into an interaction. That is about 4.20% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.63 post a day over the last 30 days, though only 33% of days saw any activity at all. Most posts go out around 17:00 UTC, and Monday is the busiest day of the week. Of the 8 posts sampled, 50% carry an image or video, 13% are part of a thread and 50% link out. The account's strongest tracked post pulled 113 interactions, about 2.9x its own typical post. Recurring topics include #neuroscience, #sleepscience, #sleep.

What is Matt Walker's engagement rate on X?
Matt Walker (@sleepdiplomat) has an engagement rate of 0.009%, based on the median interactions across 8 original posts from the last 30 days against 438,765 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
Is that a good engagement rate?
At 0.009%, Matt Walker sits above the 10th percentile of the 39,541 accounts in this comparison. Those comparison accounts are all large ones, because our scanning cadence is weighted towards big accounts, so this is a ranking among peers of similar scale rather than a ranking across X.
Does @sleepdiplomat have real engagement?
Its engagement rate beats 28% of the tracked X accounts closest to it in follower count (4,085 accounts), which puts it in the middle of its size range group. Ranking inside a size band matters because engagement rate falls as accounts grow, so a raw rate would mostly re-measure the follower count. It is a starting point for a look at follower quality, not a verdict on it.
When does @sleepdiplomat post?
Most posts go out around 17:00 UTC, and Monday is its busiest day, at roughly 0.63 posts per day across the measured window.

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