What if the biggest threat to your retirement isn’t your finances, it’s your brain’s outdated mental model of your own body? In this episode, Rachael Van Pelt, PhD discusses the Phantom Body problem: the neuroscience and physiology behind why we plan our futures around a version of ourselves that no longer exists. Drawing on 3 cognitive biases: forecasting bias, physical empathy gap, and peak function anchoring, Rachael explains why your Go-Strong decisions are being hijacked by a body your brain literally cannot update. She walks through the physiological declines (VO2 max thresholds, muscle power loss, and shrinking recovery windows) that your Phantom Body is hiding from you, and introduces the Functional Cliff: the reason decline doesn’t feel gradual until it’s too late. Rachael shares a story about the costs of delayed decisions and a practical 5-Year Stress Test you can run on your own life today.
👉 Try her free virtual coaching tool Rightsizing Decision Coach at rightsizeretirement.com to find out where your home is quietly working against your body, brain, bank, or base.
Chapters
00:00 The Phantom Body Problem: Your Brain’s Outdated Map of You
03:26 Three Cognitive Biases Driving Your Blind Spot
06:49 The Physiology: VO2 Max Thresholds, Muscle Power, and Recovery Windows
11:42 The Functional Cliff: Why Decline Isn’t a Slope, It’s a Ledge
13:27 The Delayed Decision Tax: Why Every Year of Waiting Costs More Than the Last
17:33 The 5-Year Stress Test: A Proactive Framework for Your Go-Strong Years
Hey, hey, welcome back to Next Act Ninjas, the go-to podcast for mastering your lifestyle longevity. I'm your host, Rachael Van Pelt. And today, I want to talk to you about a problem that may be costing you years of your life and you don't even know it's happening. It's your Phantom Body.
Here's what I mean by that. Just think about the last time you made future plans that assumed your body would cooperate. Maybe you booked that big adventurous retirement trip. Or you schedule out a major home improvement project. Which version of your body were you planning would show up for that? Today's body? Maybe even the body you had three years ago? That's a problem, isn't it? Because the body you're actually going to have in a few years or even in a few months is a body your brain literally cannot fathom.
I don't mean you're in denial, I mean your brain is running a prediction algorithm that is systematically wrong. It's designed to be wrong. And that "forecasting error" is quietly driving some of the most consequential decisions you'll make in your Go-Strong years. Decisions about your health, your home, your finances, your independence, they're all being made based on a mental model of your body that is out of date. That's the Phantom Body problem.
Now in previous episodes, I've talked about just how difficult it can be to connect with your future self. I've challenged you to visualize future you in your home, to imagine you five years from now going through your day. And while that's still a powerful exercise, today I'm going to explain why that visualization is so hard. Why even when you try, your brain struggles. Because once you understand the error, you can correct for it. And correcting for it might be the single most important thing you do this year.
So let me tell you what a Phantom Body is and where the term comes from. You've probably heard of phantom limb syndrome. That's when someone loses an arm or a leg and they continue to feel that limb. The brain's internal map just hasn't updated yet. It's sending signals to a body part that no longer exists. And those signals feel completely real.
Something similar happens to all of us as we age, but in the opposite direction. We don't lose a body part, we lose physical capacity gradually, in tiny increments. And because that loss is so slow, our brain's internal map just doesn't update. We still feel like the person who can sprint across a parking lot or hoist a suitcase overhead or shovel the driveway for an hour or recover from a hard workout. That feeling is real, but the body behind it, it's already changed, hasn't it? And it's going to change a lot more.
That outdated internal map is your Phantom Body. And it's the version of yourself that's making decisions for you right now. When you decide you don't need to worry about stairs yet, when you tell yourself you'll start strength training "soon", when you assume that you've got plenty of time to think about rightsizing, those aren't decisions based on future you, they're decisions based on your Phantom Body, a body that doesn't actually exist anymore.
Now there are three cognitive biases that drive that blind spot. The first is called Affective Forecasting bias. We're just terrible at predicting how we're going to feel in the future. We can understand it intellectually, but not emotionally. So when I say something like, "In five years, you're going to have less stamina, slower recovery, more joint stiffness", You hear my words, you'll probably even nod, right? But your nervous system doesn't feel it. The knowledge just stays up in your head. It never drops into your gut where decisions actually get made. And so you plan accordingly. You make decisions for the body that feels real today, not the body that is most likely going to be the one you're living in five years from now. That gap between what you know and what you feel, that's the Forecasting Bias.
The second bias is a Physical Empathy Gap. If you're currently in great shape, you can't fully comprehend what it's going to feel like to have 30 % less strength. You can't grasp what it's going to feel like when your reaction time has slowed so much that you can't catch yourself when you get out of balance, when you stumble. You can't appreciate what it's going to feel like when recovery from just a minor illness takes three weeks instead of three days. Your healthy body is a filter. It filters out any signal that doesn't match its current experience. So when someone is warning you about declines, you're just going to say, "that's not me, I'm fine". And that's right, it's not you today, but it will be you soon. And the gap between today and future you is shorter than you think.
Third bias is Peak Function Anchoring. You've heard me talk about anchoring bias in the context of home values. That's when we anchor to what we paid or what the house was worth at its peak market value. We do exactly the same thing with our bodies. A 63-year-old who has been a competitive runner for their whole life is still going to identify as a runner, even if they haven't logged a mile in years. A 67-year-old who built his own deck at 55 is going to still see himself as a DIY guy who can take on a major project. Our identities stay anchored to who we were at our peak function, not current reality.
And that anchor, it's not just psychological, it's neurological. Your brain has encoded those peak experiences deeply. They're hardwired to sense of self, the sense of your competence, your independence, all those things. Updating that is going to feel like a downgrade. It'll feel like an admission of defeat, maybe even grief. So we don't update, do we? We just keep running the old views of ourselves.
And when you put those three biases together, you get the perfect recipe for disaster. You can't feel your future, you can't simulate it, and you're anchored to a version of you that probably no longer exists. Doesn't mean you're in denial, it's just human nature. Your brain was designed for a world where people didn't live much past 40. It has no evolutionary incentive to accurately model a 72-year-old body. That's why that gap exists. It's why it's so dangerous for those of us in our Go-Strong years.
And that's just our psychology. Let's talk about physiology. In addition to those cognitive biases, we have a number of things that are changing in our physical body right now. Of course, you're well aware that your cardiorespiratory fitness is declining. In the lab, we measure that as your VO2 max, or the maximal amount of oxygen that your heart, your lungs, your blood vessels, your muscles, that they can process. In sedentary adults, that fitness declines about 10 % per decade after the age of 30. You can slow that a bit with exercise training, but you can't stop it entirely.
And your Phantom Body hides the declines because the functional consequences of fitness declines, they're not linear. You don't just go from 100 % to 90 % to 80 % where every step feels exactly the same. There's this threshold at which everyday activities just become far more difficult. Above the threshold, you barely notice declines. Below it, everything gets harder fast. That's when climbing stairs just suddenly feels like a project. A walk that used to energize you, now depletes you. Altitude, heat, even a minor cold, all of those things make you more winded than they should.
For most people, that threshold sits somewhere between a VO2 max of 25 and 30. And if you're sedentary at age 60, you're probably already uncomfortably close to that threshold. The difference between a VO2 max of 35 and 25, it's not just feeling "a little less fit", it is the difference between being able to hike comfortably at altitude, or just feeling out of breath when you walk to the mailbox. But your Phantom Body makes you think you can still handle that hike at altitude.
And then there's your muscle power. I talk a lot on this podcast about muscle mass and sarcopenia because it's the number one biomarker of aging. But there's a distinction that I haven't gone deep on before. And I think it's critically important. And that's power. Muscle power is not the same as muscle strength. Strength is how much force you can produce. Power is how fast you can produce that force. It's force times velocity. Muscle power propels you and fuels your reflexes to keep you safe in the real world. It's what's going to allow you to get up from a low chair without using your hands. It catches you when you trip. It helps you step back quickly onto that curb when you see a car coming.
But unfortunately, muscle power declines roughly at about two to three times faster than muscle strength. Your muscle power declines about 3 to 4% per year after the age of 60, compared to 1 to 2% for pure strength. That means even if you're maintaining your muscle mass reasonably well, your speed of contraction is dropping much faster. And speed is what saves you from that fall. Speed is what keeps a stumble from becoming a hip fracture. But your Phantom Body, it does not feel that speed loss. At least not until the moment you actually need it and it's not there.
And then there's your capacity to recover. This is the one that I think sneaks up on people the most. At 40, a tough workout just cost you 24 to 48 hours of recovery. At 55, that same workout is going to take you maybe 48 to 72 hours. But by 65, you're looking at 72 to 96 hours of recovery, sometimes more. And I'm not just talking about exercise recovery. It's recovery from everything. A bad flu that used to take three days becomes two weeks. A minor surgery that once had you back on your feet in days now sidelines you for weeks. A season where you're not sleeping very well, something you could power through in your 40s now leads to chronic fatigue and takes you months to dig out of.
And this is where the math gets brutal. Recovery is the denominator of your life equation. It determines how quickly you bounce back. It determines how many things you can do, what you can pursue, enjoy, survive. And that denominator shrinks every single year. I experienced this last year with my Achilles tendonitis. You might have heard me talk about it. In the past, I would have healed in just weeks. Instead, it took me months and it cascaded into a series of secondary problems with my hip and my knee and threatened a full year of training Just that one small injury had months of impact on me. And I'm someone who trains consistently. I eat right year round, but I'm not immune and neither are you.
Which brings me to the biggest takeaway for today, the Functional Cliff. I alluded to that when we talked about that VO2 max threshold. Your Phantom Body lulls you into thinking that age-related declines are going to show up as a gentle slope, a smooth, gradual, predictable fade, kind of like a dimmer switch that you're just slowly turning down the lights. And that feels comforting because we think the changes will be subtle and we'll see them coming, we'll have time to adjust.
But that's not at all what the data shows. In the real world, functional decline looks more like this plateau, which is followed then by a steep cliff. Initially, you can adapt, can compensate, make small adjustments. Maybe you hire out the yard work, you plan shorter trips, you sit down to put your shoes on. Each one of those micro adjustments keeps you on the plateau, at least for a while. It lulls you into thinking everything is fine.
But in truth, your reserve is eroding. Your margin for error is shrinking. And then something happens. Doesn't have to be anything major either. It could be a minor injury, a run-of-the-mill cold, a simple surgery, even just a bad winter where you stop moving for a few months. And suddenly you're not on that plateau anymore. You're over the edge. It feels like you aged overnight.
But it didn't happen overnight, did it? Your reserves were eroding for years, the cliff was always there. You just couldn't see it coming because you were living in that Phantom Body. And this Functional Cliff is what tips us from our Go-Strong years into our Go-Slower years fast. You feel like you're doing well and things are fairly stable, but your physical reserves are dwindling and the distance to the edge of that cliff is closer than you think.
Now the only way to keep from careening over the edge is to stop trusting your phantom feelings and start being proactive. Because waiting is going to cost you. It leads to what I call the Delayed Decision Tax, which just means that every decision that requires physical capacity, cognitive bandwidth, emotional resilience, all of it has a cost of execution. And that cost goes up with every delay. Because future you has less recovery capacity. You can't absorb the disruption so well.
I'll give you a few examples. Just think about the decision to rightsize your home. At age 60, a move is just a project. It might be a lot of work for sure, but you still have the physical energy to handle all of those moving parts. You have the strength to pack and unpack, the stamina to deal with contractors and realtors, the cognitive bandwidth to make 100 small decisions in a short time frame, and the emotional resilience to handle the stress of the transition. But if you wait five years, and that move is much harder because your strength, your stamina, cognition, resilience, they're all diminished, aren't they? Maybe not a lot, but enough to compound the difficulty every step of the way. Delay even a few more years, and now it could require help from your children. It's no longer just your project, but the family's burden. I've seen this play out dozens of times. It's behind so many forced moves that I've witnessed.
Or take the decision to start a serious strength training program. At 55, your body still responds rapidly to a training stimulus. Your protein synthesis is still reasonably efficient. Your neuroplasticity is intact enough to learn new movement patterns. You can build a meaningful reserve in six to 12 months with consistent effort. But at 65, the same effort produces maybe half of the adaptation. Not because you're doing it wrong, but because the biology of protein turnover and motor unit recruitment has shifted. By 75, building new muscle is, while physiologically still possible, it's dramatically harder. Your window for building reserves is finite. Delays will cost you greatly.
And that same pattern holds for financial decisions, for social decisions, for healthcare decisions. Every year of delay doesn't just cost you time, it costs you capacity. And reduced capacity is going to make next year's delay even more expensive. Those costs aren't linear, they're compounding. And your Phantom Body is lulling you into complacency.
I recently worked with a couple that experienced this the hard way. They talked about downsizing for years, almost five years. When they first started thinking about it, Steve and Maria were in their early 60s. They were in great shape. They were strong, active, sharp, but their phantom bodies had convinced them there was no rush.
So by their mid to late 60s, they were starting to feel the cost of the delay. Steve started having knee issues that deteriorated enough that he was facing knee replacement surgery. Maria had developed some fibromyalgia that made housework and yard work and those sorts of things more difficult. And the home that fit them years before just became a source of friction.
When they finally moved, they found it much harder to execute than it would have been. Now, it wasn't impossible. They did it. They're happier for it. But Steve told me later that he wished they'd done it before his knees were shot. He said it would have been so much easier. And Maria agreed, she said she was still feeling like she was recovering months later. That's the Delayed Decision Tax. It's the cost of execution increasing exponentially every year we delay. The cost to us physically, mentally, and emotionally. Our bodies simply have less capacity to recover from those disruptions.
So what can we do about that? Well, unfortunately, we can't rewire our brain. Those cognitive biases are baked into our neurology. And we can't completely reverse the age-related declines, at least not yet. But we can train ourselves to make proactive decisions before we hit that Functional Cliff. We can take advantage of our Go-Strong years and make moves before we tip into those Go-Slower years.
One strategy that I think helps us get into proactive, rather than reactive, mode is doing a 5-Year Stress Test. If you've ever worked with a financial planner, then you know they like to stress test your They'll ask what happens to your money if the market drops 40%. Can you still live the life you want? It forces you to plan for worst case scenarios instead of just the rosy scenario. I want you to do the same thing with your body and your home.
Think about it like this. If you lost 20 % of your current strength and endurance over the next five years, or you had one significant health setback like a surgery, an injury, a prolonged illness, would your home still work for you? Would your daily life still function? Would your social connection hold? What about your finances? Would they absorb the disruption? If the answer to any of those is no or I'm not sure, that's your red flag. It's not a reason to panic, it's a reason to plan. And plan now while your Go-Strong self still has the capacity to execute.
Start making one decision per quarter with your current body, your Go-Strong body. Something that's going to improve your Go-Slower years. That's the paradox at the heart of the Phantom Body problem. The best time to make Go-Slower decisions is during your Go-Strong years, precisely when those decisions feel premature. Your Phantom Body might have convinced you that you don't need to think about it yet, but the data says otherwise.
So once per quarter, just make a decision that your Go-Slower self will thank you for. Just one. It might be starting a strength training program. It might be scheduling a conversation with your partner about the house. It might be running the numbers on your home equity. It might be visiting a community you've been curious about.
You don't have to overhaul your entire life. You just need to make one small strategic step at a time every 90 days, whether you feel the urge to do so or not. In fact, that's the definition of being proactive rather than reactive. And over the course of a year or two, those moves are going to add up, aren't they? They'll add up to something powerful. They'll add up to a life that is designed precisely for future you, not some phantom version of you that no longer exists.
And if you'd like an easy way to stress test your situation right now, I would suggest you just try my free virtual Rightsizing Coach at rightsizeretirement.com. It only takes you a few minutes and it will help you zero in on which domain has the least reserve and potentially the biggest cliff that you want to avoid. Go grab that or click the link in the show notes. If you have a partner, I recommend each of you try the coaching tool separately and compare notes because I can almost guarantee your phantom bodies are lulling you into different areas of complacency.
Just remember that complacency can lead to delays that are going to cost you down the road, physically, mentally, and financially. So start making one proactive decision per quarter. I think your future self is going to thank you. Until next time, my friends, live well, love more, age less.