Future-Proof Your Brain from Dementia and Stay Sharp at Any Age. Dr. Tommy Wood.
Hey family. JP Morgan put this book on their list for students and interns. I am not going to turn this into a sermon. It is not a church book. But that list got my attention. If they want their young people reading it, I want us looking at it. Here is what I think they want you to walk away with. And here is what it hit in me.
Dr. Tommy Wood is a physician and neuroscientist, and his whole book is an argument against a belief most people hold without examining it: that the adult brain is set, and that decline is simply what happens next. He says that is wrong, and that the brain keeps adapting when you give it the right stimulus.
His framework is the 3-S Model: Stimulation, Sleep, and nutrient Supply. What makes it worth a student's time is what he leaves out. The gains do not come from expensive pills, far-off discoveries, or extreme optimization routines. They come from things already inside your control: how you eat, how you move, how you sleep, who you are around, and how you handle stress.
Wood's central claim. Age is not the mechanism people assume it is.
Stimulation, Sleep, and nutrient Supply. Everything else is built on those three.
Headroom is the mental function you have available. More headroom means damage costs you less later.
The brain adapts to what is hard. Comfortable repetition of what you already do well is not stimulus.
It is one of the three pillars, not the slack in your schedule.
Being around people is on the list of controllable factors, not a soft extra.
Not pills, not breakthroughs, not extremes. Diet, movement, sleep, connection, stress tolerance.
Wood's whole project is busting the belief that the adult brain is fixed and decline is inevitable.
He says the brain keeps adapting and developing when you give it the right stimulus, at any age. If you are twenty-two, that means the ceiling you assume you have is not real. If you are my age, it means the same thing.
I have watched people in this industry decide at fifty that they are done learning new systems. They are not wrong about it being harder. They are wrong that it is closed. Every one of them got passed by somebody who kept going.
I have been teaching for a long time and I still study like somebody who does not know enough, because the day I decide I have arrived is the day the teaching starts going stale.
Do not accept a ceiling somebody described to you. Most of what people call talent is accumulated stimulus, and you get to choose how much of that you accumulate.
My kids need to watch me learn something badly in front of them. If they only ever see me competent, they will think ability is issued at birth instead of built.
His key idea is headroom, the amount of mental function you have available to you.
The point of building it is not to feel clever today. It is that when something eventually takes some capacity away from you, headroom is what decides whether that loss is an inconvenience or a catastrophe. You build it long before you need it.
Cash reserve is headroom. So is a second contract vehicle and a bench with more than one person who can run a pursuit. None of it looks necessary until the month it is the only reason we survive.
I build margin into my week on purpose so that an emergency does not cost me the whole month. A schedule with no slack in it is not disciplined, it is fragile.
Build skills before the job requires them and savings before you need them. Headroom is what turns a crisis into an inconvenience.
Isabella and I do not run our family at one hundred percent capacity. If every hour is committed, one sick kid takes the whole structure down.
The 3-S Model is Stimulation, Sleep, and nutrient Supply. Three pillars, and the structure needs all three.
Notice which one people volunteer to give up first. Sleep is not the slack in your schedule. In this model it is load-bearing, and cutting it does not buy you time, it borrows time at a bad rate.
I have run proposals on four hours of sleep and I can tell you the writing was worse and the errors were mine. The all-nighter feels like commitment and it is mostly a transfer of quality out of the work.
I write early because that is when my head is clearest, which only works if I protected the night before. The discipline is not the alarm, it is what I did at ten the previous evening.
The intern culture that brags about no sleep is selling you something. Your judgment is the product you are being paid for, and sleep is where judgment is manufactured.
We hold a real bedtime in our house, including for the adults. It is not rigidity. It is that everybody in this family is worse at being a person when they are short on sleep.
Stimulation means giving the brain something it has to adapt to. Adaptation is a response to difficulty.
This is why doing more of what you are already good at does not count. Comfortable repetition maintains. Difficulty is what actually builds, which means the frustrating thing you are avoiding is the useful one.
The pursuits that grew my company were the ones we were not obviously qualified for yet. The comfortable re-competes paid the bills and taught us nothing.
If preparing a message never costs me anything, I am recycling. The passages that give me trouble are the ones that end up feeding people the most.
Volunteer for the assignment that scares you a little. Being slightly out of your depth on purpose is the fastest legal way to grow.
I let my kids struggle with things longer than is comfortable to watch. Rescuing them early feels like love and it robs them of the adaptation.
Wood lists the factors actually in your control: diet, sleep, physical activity, social connection, and stress tolerance.
Social connection sitting on a neurologist's list is the part most people skim past. It is not a soft add-on to the medical advice. It is on the same list as food and sleep, which pairs neatly with what Wallace argued two books ago.
I do not do this alone. Partners, a board, people who will tell me I am wrong. Isolation is where bad business decisions get made and stay unchallenged.
Ministry cannot be done from a distance. The relationships are not the overhead on the work. A good deal of the time they are the work.
Do not build a career so consuming that you arrive at forty with no one who knows you. That is not a lifestyle cost, it is a health cost.
Isabella is the person who tells me the truth. Twenty-plus years in, that relationship has done more for how my head works than any habit I have ever picked up.
This is book 7 of 9. These are books JP Morgan wants their new people and interns to read. What did you get out of going through this? Let's discuss this in the comments.
I love you.
This is the YEAR OF DISCOVERY.
Rick