A field guide to the machine behind your eyes
Your brain is doing strange things right now.
50 Strange Things Your Brain Does Every Day
Discover the hidden neuroscience behind the everyday experiences you notice — and the ones your brain quietly hides from you.
Instant digital access after payment
Written by Dr. Karun Kumar, MD (Pharmacology)
01 — The questions inside
You already experience these things. You just don't know why.
SACCADIC MASKING
Why does your brain hide whole stretches of vision from your conscious experience?
CHRONOSTASIS
Why does a clock seem to stop for a beat the moment you glance at it?
THE DOORWAY EFFECT
Why can walking into another room take the reason you went there with it?
INATTENTIONAL BLINDNESS
Why can something enormous happen directly in front of you and go unseen?
BONE CONDUCTION
Why does your recorded voice sound so wrong compared with the one in your head?
EARWORMS
Why does a song you don't even like play in your head for six hours?
02 — The big idea
You don't experience reality directly. Your brain constructs an experience of reality.
Your eyes deliver two upside-down, low-resolution, blind-spotted streams of raw footage. Colour isn't in the light. Whole fractions of a second are thrown away. Nothing arrives complete.
So your brain edits. It predicts, fills gaps, colour-grades, compresses and stitches — then hands you a seamless single-channel experience called the present moment and lets you believe that is what happened.
This book is about the moments when the edit slips. Not glitches — the exposed seams of a system doing something extraordinarily clever. Once you learn to see them, you can't unsee them.
03 — What you will discover
Seven parts. Fifty entries. Five minutes each.
The parts move outward — from the raw material your senses deliver, through the way your brain organises it into time and memory, to the machinery that manufactures the feeling of being someone.
04 — Fifty reasons to be curious
A glimpse of the table of contents
01
You Are Blind for Forty Minutes Every Day
02
The Clock That Stops When You Look At It
03
There Is a Hole in Your Vision and Your Brain Paints Over It
04
You Can Miss a Gorilla
10
You Live About a Tenth of a Second in the Past
16
Every Time You Remember Something, You Change It
17
You Walk Into a Room and Forget Why
27
You Drove Home and Remember None of It
28
Your Brain Starts Moving Before You Decide To
30
You Are Breathing Through One Nostril Right Now
33
You See Faces in Plug Sockets, Cars and Burnt Toast
37
Your Recorded Voice Sounds Wrong Because It Is the Real One
41
Every Night Your Brain Paralyses Your Body
49
You Feel Your Phone Buzz When It Did Not
50
The Person Reading This Sentence Is Being Assembled Right Now
And that's only a glimpse of the 50.
Get this e-book05 — Try it yourself
Don't just read about your brain. Catch it in the act.
Every one of the fifty entries ends with a short experiment you can run on your own head — usually in under a minute, usually with nothing but your body and whatever is already in the room.
They are curiosity experiments, not tests of anything. The point is the moment the seam becomes visible.
Look between your own eyes in a mirror and try to catch your eyes moving.
Find the hole in your own vision, and watch your brain paint over it.
Glance at a ticking clock and feel the first second stretch.
Test how much of a scene your attention actually delivers to you.
Check which nostril you are breathing through right now.
Try to read the same line of text twice in a dream — and see what happens.
Not another boring neuroscience textbook
Much of the field's writing
Dense terminology
Long explanations before the payoff
Academic presentation
Written for people already inside the subject
This book
Short, focused entries — about five minutes each
Everyday examples you will recognise immediately
Real mechanisms, explained in plain English
A "Try It Yourself" experiment in every entry
A clear takeaway at the end of each one
Written for curious non-specialists
Who will love this book?
Written for
People fascinated by psychology and neuroscience
Anyone who keeps asking "why does my brain do that?"
Students curious about the brain
Readers who enjoy surprising science
Readers who prefer short, self-contained chapters
Anyone who enjoys learning strange facts about themselves
Not written for
This is popular science for general readers. If you are looking for a clinical medical textbook, a treatment manual, or a diagnostic guide, this is not that book.
Nothing in it is a substitute for professional medical or psychological advice.
06 — Scientific honesty
Curious without pretending certainty
Popular neuroscience has a habit of overclaiming. This book tries hard not to add to that pile. Where the science is solid, it says so plainly. Where a famous finding has been challenged, shrunk by replication, or is still argued over, it says that too — because the argument is usually the more interesting part.
So when you read "we think" or "the leading explanation is," take it literally. Every phenomenon is grounded in published research, and the further reading section lists the primary studies — including, where a finding is contested, the work that challenges it.
07 — The author
Dr. Karun Kumar
MD (Pharmacology)
A physician and pharmacologist who has spent more than a decade teaching medical and dental students how drugs act on the human body — and, inevitably, how much of what the body does happens without asking permission first.
He completed his MD in Pharmacology at Era's Lucknow Medical College & Hospital and currently serves as Associate Professor of Pharmacology at Palakkad Institute of Medical Sciences, Kerala.
He is also the creator of the YouTube channel Musical Pharmacology, where he teaches pharmacology through music, and the author of The Psychology of Why We Can't Stop Scrolling.
karun_kumar@live.in
08 — What you get
Everything in the download
The complete ebook — 50 entries, 189 pages
Seven themed parts, readable in any order
Complex brain mechanisms in everyday language
A "Try It Yourself" experiment in every entry
A clear takeaway after each entry
Introduction, afterword and further reading with primary sources
A journey through perception, time, memory, sleep and consciousness
Digital edition — PDF
50 Strange Things Your Brain Does Every Day
Dr. Karun Kumar, MD (Pharmacology)
₹99
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Questions
Who is this book for?
Curious general readers. No background in neuroscience, psychology or medicine is assumed anywhere in the book.
Is this a medical textbook?
No. It is a work of popular science about ordinary brain behaviour. It is not a medical text, a diagnostic guide or a treatment manual.
Do I need to know any neuroscience?
None. Real mechanisms, real structures and real research are explained without requiring you to have studied any of it.
How long are the chapters?
About five minutes each. Read one over morning coffee or fifteen in a sitting — the book is built for both.
Can I read the entries in any order?
Yes. Each entry stands on its own. The seven parts are sequenced deliberately, but nothing depends on reading them in order.
Are there experiments I can try myself?
Every entry ends with one — a short experiment, usually under a minute, usually needing nothing but your body and whatever is in the room.
What topics does it cover?
Seven domains where the brain's tricks cluster: perception, time, memory, autopilot behaviour, social life, sleep, and the sense of self.
How do I receive the ebook after purchase?
After payment you are taken straight to a download page where you can save the ebook to your device.
Is it suitable for students?
Yes, for students curious about the brain. It is general-interest reading rather than a syllabus text or exam preparation.
Is any of this medical advice?
No. The book states plainly that it is not a substitute for professional medical or psychological advice, and that anything genuinely worrying should be taken to a qualified clinician.
Your brain has been doing all of this your entire life. Now you can finally catch it in the act.
Discover the hidden machinery behind the ordinary.
Get this e-bookInstant digital access after payment · ₹99
₹99 · instant access