Matt Walker engagement report
@sleepdiplomat - 455K followers on X
Measured over 14 original posts from a 30-day window, last computed on September 25, 2026.
Engagement
A typical post picks up 44 interactions against 455K followers, an engagement rate of 0.01%. Measured over 14 original posts, its engagement rate beats 34% of 20,444 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 14K times each, and 0.314% of those impressions turn into an interaction. That is about 3.11% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.2 post a day over the last 30 days, with activity on roughly 57% of days. Most posts go out around 14:00 UTC, and Monday is the busiest day of the week. Of the 14 posts sampled, 21% carry an image or video, 57% are part of a thread and 29% link out. The account's strongest tracked post pulled 170 interactions, about 3.9x its own typical post. Recurring topics include #sleep, #sleepscience, #circadianrhythm.
Measured over 14 original posts from a 30-day window, last computed on September 25, 2026. Recurring tags: #sleep, #sleepscience, #circadianrhythm.
Compared with accounts its own size
Matt Walker's engagement rate beats 34% of the tracked X accounts closest to it in follower count (20,444 accounts, accounts of similar size (decile 10 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 22% 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 0.01%, Matt Walker sits above the 10th percentile of the 204,694 accounts in this comparison. That places it in the bottom 25% band, which runs below 0.024%.
Show the percentile table
| Percentile | Engagement rate |
|---|---|
| 10th percentile | 0.004% |
| 25th percentile | 0.024% |
| 50th percentile | 0.143% |
| 75th percentile | 0.677% |
| 90th percentile | 2.55% |
| 99th percentile | 82.4% |
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 14:00 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.
Show engagement by hour posted, utc as a table
| Hour (UTC) | Vs author median | Posts |
|---|---|---|
| 00:00 UTC | -1% | 89K |
| 01:00 UTC | -2% | 90K |
| 02:00 UTC | -3% | 88K |
| 03:00 UTC | -4% | 94K |
| 04:00 UTC | -5% | 76K |
| 05:00 UTC | -4% | 75K |
| 06:00 UTC | -5% | 86K |
| 07:00 UTC | -5% | 93K |
| 08:00 UTC | -4% | 108K |
| 09:00 UTC | -4% | 124K |
| 10:00 UTC | -3% | 129K |
| 11:00 UTC | -3% | 141K |
| 12:00 UTC | -3% | 154K |
| 13:00 UTC | -3% | 167K |
| 14:00 UTC | -4% | 173K |
| 15:00 UTC | -2% | 176K |
| 16:00 UTC | -3% | 171K |
| 17:00 UTC | -3% | 159K |
| 18:00 UTC | -2% | 149K |
| 19:00 UTC | -2% | 141K |
| 20:00 UTC | -1% | 131K |
| 21:00 UTC | 0% | 116K |
| 22:00 UTC | -2% | 100K |
| 23:00 UTC | -1% | 90K |
Show engagement by day of week as a table
| Day | Vs author median | Posts |
|---|---|---|
| Sunday | +5% | 393K |
| Monday | +1% | 483K |
| Tuesday | -2% | 520K |
| Wednesday | -3% | 472K |
| Thursday | -2% | 430K |
| Friday | -3% | 447K |
| Saturday | +2% | 393K |
Formats this account uses
Its own posting mix on the left, and what each of those formats does across every account we track on the right. Only formats where the effect clears our publish test appear here, so an empty row is a format we could not measure rather than one that does nothing.
| Format | This account | Catalog effect | 95% interval | Accounts behind it |
|---|---|---|---|---|
| Image or video | 21% of posts | +111% | +108% to +115% | 34K |
| Outbound link | 29% of posts | -41% | -42% to -40% | 32K |
| Typical length | - | no effect | -2% to -1% | 42K |
- 21% of this account's sampled posts carry an image or video. Across the catalog, posts with an image or video run 111% above the same accounts' other posts.
- 29% of its posts carry a link off X. Across the catalog, posts with an outbound link run 41% below the same accounts' other posts.
- Its average post runs 265 characters, which falls in the 180 - 280 characters band. Across the catalog, posts of 180 to 280 characters match the same accounts' other posts almost exactly.
These are catalog-wide differences applied to this account's own posting mix, not a measurement of how each format performs for this account specifically. We keep one median per account, not one per format per account, so the second thing is not something this data can tell you.
Best tweets
- Sep 23, 20263.9x their median
How you sleep tonight is being decided in the morning. ☀️ Light is the signal your body clock reads, and it wants the outdoor kind. Ten minutes by an open window or on the street will do it. Melatonin then shows up on time this evening. #SleepScience
- Sep 24, 20263.1x their median
Once you fall asleep, your brain changes jobs. In N2, short bursts called sleep spindles help coordinate brain activity involved in memory. N3, your deepest sleep, brings large, slow waves. In REM, the brain gets busy while most muscles rest. Each stage has its own work to do.
- Jul 27, 20262.6x 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
- Sep 19, 20262.2x their median
There is a kind of energy that only the night can make.🌙 When 95 adults lost 78 minutes of sleep for six weeks, their weight rose by 0.45 kg and their still hours grew by 17.2 minutes a day. The willpower you look for at 3pm is built at 11pm. #SleepScience #sleep
- Sep 23, 20262.1x their median
A phone at arm's length sends light straight into your eyes, and the pull of what is on the screen keeps you there. 📱 Put the charger in another room. Buy a cheap alarm clock and turn its face away. The bedroom loses its most interesting object. #bettersleep
- Sep 21, 20262.1x their median
Light is the signal your brain reads as time of day. 💡 Lower it 30 to 60 minutes before bed. Choose something slow for that last stretch of the evening. Keep your sleep and wake hours steady and your body will learn the rhythm on its own. #SleepScience
- Sep 20, 20262.0x their median
Your brain writes the day into memory while you dream. 💭 Alcohol pushes REM later into the night. It takes some of that dreaming away. The hours after midnight come back in pieces. Put the glass down earlier and see how the morning feels. #SleepScience #Alcohol
- 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
- Jul 6, 20261.5x 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
- Jun 22, 2026
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
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
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 44 interactions against 455K followers, an engagement rate of 0.01%. Measured over 14 original posts, its engagement rate beats 34% of 20,444 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 14K times each, and 0.314% of those impressions turn into an interaction. That is about 3.11% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 1.2 post a day over the last 30 days, with activity on roughly 57% of days. Most posts go out around 14:00 UTC, and Monday is the busiest day of the week. Of the 14 posts sampled, 21% carry an image or video, 57% are part of a thread and 29% link out. The account's strongest tracked post pulled 170 interactions, about 3.9x its own typical post. Recurring topics include #sleep, #sleepscience, #circadianrhythm.
- What is Matt Walker's engagement rate on X?
- Matt Walker (@sleepdiplomat) has an engagement rate of 0.01%, based on the median interactions across 14 original posts from the last 30 days against 455,451 followers. Replies, reposts and quote-posts of other people are excluded from that sample.
- Is that a good engagement rate?
- At 0.01%, Matt Walker sits above the 10th percentile of the 204,694 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 34% of the tracked X accounts closest to it in follower count (20,444 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 14:00 UTC, and Monday is its busiest day, at roughly 1.17 posts per day across the measured window.