{"id":15084587,"date":"2026-03-23T15:06:05","date_gmt":"2026-03-23T19:06:05","guid":{"rendered":"https:\/\/www.inthacity.com\/news\/dr-tommy-wood-shares-his-science-backed-strategy-to-prevent-cognitive-decline-after-40\/"},"modified":"2026-03-31T06:03:52","modified_gmt":"2026-03-31T10:03:52","slug":"dr-tommy-wood-shares-his-science-backed-strategy-to-prevent-cognitive-decline-after-40","status":"publish","type":"post","link":"https:\/\/www.inthacity.com\/news\/dr-tommy-wood-shares-his-science-backed-strategy-to-prevent-cognitive-decline-after-40\/","title":{"rendered":"Dr. Tommy Wood Shares His Science-Backed Strategy to Prevent Cognitive Decline After 40"},"content":{"rendered":"<p>There is a quiet realization baked into each of our lives.<\/p>\n<p>It says that sometime after 40, your edge dulls, focus slips, and recall lags. You trade in being \u201cdangerous for becoming \u201cexperienced.\u201d Your conversations revolve around what you used to do, and less of what you are doing now and will be doing in the future.<\/p>\n<p>Many people accept this fate. They accept the brain fog, shorter attention span, and creeping distractions that occupy a solid chunk of each day. In other words, there are lots of us who accept the idea that decline is just part of life.<\/p>\n<p>Dr. Tommy Wood, author of <a href=\"https:\/\/www.amazon.com\/Stimulated-Mind-Future-Proof-Brain-Dementia\/dp\/0593797817\"><em>The Stimulated Mind,<\/em><\/a> which comes out March 24, calls it what it is: behavioral conditioning.<\/p>\n<p>Wood\u2019s career spans hospital wards, research labs, high-performance motorsports paddocks, and executive coaching rooms. He\u2019s seen the aging brain, the injured brain, the elite brain under pressure \u2013 and the common thread isn\u2019t inevitability.<\/p>\n<p>It\u2019s stimulus.<\/p>\n<p>\u201cCognitive decline isn\u2019t inevitable if you continue to challenge your brain and body,\u201d Wood told <em>Muscle &amp; Fitness<\/em>. \u201cThere is data even going back 70 years that show that the majority of people actually maintain function into their sixties, seventies, and eighties.\u201d<\/p>\n<p>The current world is trained on distraction, rewards, multitasking, fear of stress, and treats recovery like laziness. Then we wonder why our minds feel overtrained and underperforming. If you <a href=\"https:\/\/www.muscleandfitness.com\/workouts\/workout-tips\/the-ultimate-guide-to-progressive-overload-and-muscle-growth\/\" target=\"_blank\" rel=\"noopener\">understand progressive overload<\/a>, you already understand the fix.<\/p>\n<p>The brain follows the same rule as muscle: Apply stimulus, recover, adopt, and repeat. The question isn\u2019t whether your mind will change over time, because it will.<\/p>\n<p>The question is whether you\u2019re training it\u2014or letting it atrophy while you scroll.<\/p>\n<h2>The \u2018Retirement\u2019 Myth: How Expectations Become Reality<\/h2>\n<p>Wood is a neuroscientist and physician who has worked across brain development, traumatic brain injury, dementia prevention, and elite performance environments\u2014<a href=\"https:\/\/www.muscleandfitness.com\/athletes-celebrities\/pro-tips\/5-common-sense-focus-strategies-for-accelerating-your-fitness-goals\/\">including Formula 1.<\/a> He traces a lot of our fear around aging back to a century-old idea: that past a certain point, people become less useful, less capable, and eventually\u2014replaceable.<\/p>\n<p>\u201cGoing back decades, if not more than a century, we had this idea that as people hit a certain age, they\u2019ll have lost so much function,\u201d he says. \u201cThey become so useless that they have to be removed from their jobs. This is one of the reasons why they popularized the idea of retirement.\u201d<\/p>\n<p>The bigger problem isn\u2019t just cultural, but personal. Because once you absorb that message, you start living it.<\/p>\n<p>\u201cWe internalize this idea of, \u2018Oh, I\u2019m too old to do that,\u201d Wood said. \u201cI can\u2019t lift that heavy thing because I\u2019m gonna injure myself,\u2019 or \u2018I\u2019m too old to learn that new skill.\u2019 And because of that, we stop engaging in these things that we know help to maintain function. So then it becomes a self-fulfilling prophecy.\u201d<\/p>\n<p>Wood points to what psychologists call stereotype embodiment theory\u2014the idea that what we expect to happens shapes our behaviors so powerfully, it eventually becomes our reality.<\/p>\n<p>In lifting terms: If you stop training because you assume you\u2019re going to get weaker anyway, you guarantee the outcome you live. Not because time wins\u2014because you stopped giving your body (and brain) a reason to adapt.<\/p>\n<figure class=\"wp-caption \"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.muscleandfitness.com\/wp-content\/uploads\/2019\/07\/Male-Elderly-Old-Bench-Press.jpg?quality=86&amp;strip=all\" alt=\"Male-Elderly-Old-Bench-Press\" width=\"1109\" height=\"614\" data-fallback-img=\"https:\/\/i0.wp.com\/www.muscleandfitness.com\/wp-content\/uploads\/2019\/07\/Male-Elderly-Old-Bench-Press.jpg?quality=86&amp;strip=all\"><figcaption class=\"wp-caption-text\"><span class=\"credit\">JohnnyGreig \/ Getty<\/span><\/figcaption><\/figure>\n<h2>Why Resistance Training Futureproofs the Brain<\/h2>\n<p>Wood doesn\u2019t just say exercise helps the brain. He explains how different training styles protect different systems\u2014and why resistance training is uniquely powerful.<\/p>\n<p>\u201cThere are essentially three different types of exercise when we think about brain health,\u201d he said.<\/p>\n<ul>\n<li>Aerobic work tends to benefit gray matter (a major component of the central nervous system), the hippocampus, and memory<\/li>\n<li>Open-skill\/coordinative training (sports, martial arts, dancing) tends to support global cognition<\/li>\n<li>Resistance training has a standout effect on white matter\u2014the brain\u2019s fast-connection network tied to decision-making and executive function<\/li>\n<\/ul>\n<p>The reason that matters is simple: \u201cThe structure and function of the white matter is one of the best predictions of loss of cognitive function and future dementia risk,\u201d Wood said. \u201cAnd resistance training seems to particularly benefit the structure and function of the white matter.<\/p>\n<p>White matter helps you make fast decisions, control impulses, and stay sharp under pressure, so for those still pumping iron, Wood says you\u2019re doing both your body and brain a huge service.<\/p>\n<p>\u201cWe now know that when people used to make fun of us because we spent all this time in the gym and therefore we must be stupid\u2014actually, we\u2019re looking after our brains by lifting weights,\u201d he says.<\/p>\n<p>Even better, you don\u2019t need a complicated training program to get brain benefits. Wood highlighted trials where older adults <a href=\"https:\/\/www.muscleandfitness.com\/features\/active-lifestyle\/stronger-muscles-can-lead-stronger-brain-study-finds\/\" target=\"_blank\" rel=\"noopener\">improved cognition with basic resistance training<\/a>.<\/p>\n<p>\u201cTwo times a week, three sets of eight to 12, five to six exercises covering all the muscle groups,\u201d he said. \u201cSuper basic stuff. But that significantly improves the structure and function of the white matter and improves both global cognition and executive function.\u201d<\/p>\n<p>That\u2019s a pretty wild return on investment on a simple training plan. Two sessions a week can do more than build muscle. It can help protect the systems that keep you independent, competent, and sharp decades from now.<\/p>\n<h2>Mistakes Are the Stimulus<\/h2>\n<p>In the gym, you don\u2019t grow from comfort. The growth comes from challenge plus recovery. Wood says the brain operates on the same logic\u2013except the stimulus isn\u2019t just intensity. It\u2019s errors.<\/p>\n<p>\u201cWe know the main driver of neuroplasticity is errors or mistakes or failure in some kind of complex task,\u201d he said. \u201cLearning a language, learning a new sport, learning a musical instrument.\u201d<\/p>\n<p>That failure triggers adaptation: the brain allocates more resources to the networks that couldn\u2019t meet demand. Just like you need to reach a muscular failure when you\u2019re lifting weights, the same must be done for the brain. Finding new complex skills that are challenging, making mistakes, and coming back to it helps.<\/p>\n<p>The schedule you do these tasks also matters.<\/p>\n<p>\u201cThe best structure seems to be two or three times a week,\u201d Wood said. \u201cThirty to 60 minutes, and then slowly challenging yourself more and more over time. You have to put more plates on the bar.\u201d<\/p>\n<p>That\u2019s futureproofing in practice\u2014not living in a comfort loop, but staying in a cycle of learning, failing, adapting, and rebuilding.<\/p>\n<h2>Stress Tolerance Beats Stress Avoidance<\/h2>\n<p>Wood\u2019s stress philosophy is a mature one. He doesn\u2019t sell the fantasy of a stress-free life. Instead, what we should be striving for is the goal of stress competence.<\/p>\n<p>\u201cStress response is an important thing,\u201d he says. \u201cYou activate the stress response when you exercise, and the stress response is what allows us to focus and pay attention.\u201d<\/p>\n<p>Stress is an issue for most of us, but the real issue is how we relate to it. Being stressed about stress can increase the long-term risk of chronic disease and has a significant impact on our health.<\/p>\n<p>You can also make stress twice as damaging by resisting it, overthinking it and catastrophizing it. Wood points to studies showing your framing changes your physiology and performance in the moment.<\/p>\n<p>\u201cIf you go into a stressful situation thinking stress is detrimental, that will negatively impact your performance,\u201d he said. \u201cBut if you go in thinking stress is beneficial you still get a stress response. But you also release other hormones that help you adapt. You still release cortisol, but also release things like DHEA (a natural steroid hormone produced by the adrenal glands that acts as a precursor to sex hormones (estrogens and androgens).\u201d<\/p>\n<p>Dehydroepiandrosterone\u2014aka DHEA\u2014is also used to combat age-related decline, improve sexual function, and boost energy. Releasing DHEA in a stressful situation helps to make better decisions.<\/p>\n<p>You should go and chase more stress, but it shouldn\u2019t also be treated like black licorice. Treat it like training: Dose it appropriately, recover properly, and rust that the adaptation is part of the process.<\/p>\n<figure class=\"wp-caption \"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.muscleandfitness.com\/wp-content\/uploads\/2026\/03\/Elderly-figure-with-an-aging-brain-showing-synaptics-and-nuerons.jpg?quality=86&amp;strip=all\" alt=\"Elderly figure with an aging brain showing synaptics and nuerons\" width=\"1109\" height=\"614\" data-fallback-img=\"https:\/\/i0.wp.com\/www.muscleandfitness.com\/wp-content\/uploads\/2026\/03\/Elderly-figure-with-an-aging-brain-showing-synaptics-and-nuerons.jpg?quality=86&amp;strip=all\"><figcaption class=\"wp-caption-text\"><span class=\"credit\">Justlight\/Instagram<\/span><\/figcaption><\/figure>\n<h2>Cognitive Fatigue Is Overtraining<\/h2>\n<p>We\u2019ve all overtrained physically at some point, and know the feeling: The easy days aren\u2019t easy, the hard days aren\u2019t productive, and everything is stuck in the same gray zone.<\/p>\n<p>Wood says many people are doing the cognitive version of that every day.<\/p>\n<p>\u201cCognitive fatigue and physical fatigue actually have a tone of similarities,\u201d he said. \u201cPhysical fatigue can be driven by cognitive fatigue.\u201d<\/p>\n<p>If you proceed through the day feeling like each activity or task is a struggle, you can\u2019t really focus. This also applies to when you relax. Are you truly still, or are you streaming your favorite show, while scrolling social media, while in between group chats?<\/p>\n<p>This is the \u201chard-ish\u201d zone: constant task switching, constant stimulation, no true recovery.<\/p>\n<p>\u201cIt creates this low level of stress,\u201d Wood said. \u201cWe do lower quality work because if it. That\u2019s more stressful.\u201d<\/p>\n<p>So what do you do when your brain needs recovery\u2013not more stimulation?<\/p>\n<p>Wood\u2019s prescription is practical and realistic:<\/p>\n<ul>\n<li>Protect a 30-60 minute deep-focus block when you work best<\/li>\n<li>Turn off notifications and remove the phone<\/li>\n<li>Take real breaks that switch you off\u2013even five minutes<\/li>\n<li>Batch your meetings\/emails instead of letting them fracture your day<\/li>\n<li>In the evening, wind down with one thing at a time<\/li>\n<\/ul>\n<p>And yes, you should give yourself permission for a break\u2014no matter what that looks like.<\/p>\n<p>\u201cScroll puppy videos on Instagram,\u201d Wood said. \u201cWatch a rerun of a sitcom that you enjoy, something that truly switches you off.\u201d<\/p>\n<p>While this might sound like a contradiction to the above mentioning these activities, notice that this only includes one thing without bringing in those others.<\/p>\n<p>The point is to stop training distractions in your day to day as your default mode. Deep work is your hard session. True breaks are your recovery. And sleep is the adaptation window.<\/p>\n<figure class=\"wp-caption \"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.muscleandfitness.com\/wp-content\/uploads\/2023\/08\/Elderly-couple-performing-an-ab-rollout-workout-with-a-trainer-looking-on.jpg?quality=86&amp;strip=all\" alt=\"Elderly couple looking to become a super ager performing an ab rollout workout with a trainer\" width=\"1109\" height=\"614\" data-fallback-img=\"https:\/\/i0.wp.com\/www.muscleandfitness.com\/wp-content\/uploads\/2023\/08\/Elderly-couple-performing-an-ab-rollout-workout-with-a-trainer-looking-on.jpg?quality=86&amp;strip=all\"><figcaption class=\"wp-caption-text\"><span class=\"credit\">BAZA Production<\/span><\/figcaption><\/figure>\n<h2>The Stimulated Week<\/h2>\n<h3>A Simple Brain-Forward Training Split<\/h3>\n<p><strong>Goal:<\/strong> Build a week that trains muscle + white matter, supports memory, and adds real cognitive stimulation\u2014without turning your life into a biohacking project.<\/p>\n<p><strong>Key idea from Wood:<\/strong> Different training styles feed different parts of brain health. Resistance training supports white matter\/executive function, aerobic\/interval work supports memory\/hippocampus, and open-skill movement supports global cognition.<\/p>\n<h3>Day 1 \u2014 Strength (White Matter Builder)<\/h3>\n<ul>\n<li>Full-body or upper\/lower split<\/li>\n<li>4\u20136 big movements + accessories<\/li>\n<li>3 sets of 8\u201312 reps on main lifts (Wood\u2019s \u201csuper basic\u201d template)<\/li>\n<\/ul>\n<p><strong>Finish:<\/strong> 10 minutes easy walk or bike to downshift.<\/p>\n<h3>Day 2 \u2014 Zone 2 + True Recovery<\/h3>\n<ul>\n<li>30\u201345 minutes of easy cardio (keep it at a conversational pace)<\/li>\n<li>No multitasking if possible (no podcasts if you can stand it)<\/li>\n<li>Optional mobility + 10 minutes early bedtime wind-down<\/li>\n<\/ul>\n<h3>Day 3 \u2014 Intervals (Memory + BDNF Signal)<\/h3>\n<p><strong>Choose one:<\/strong><\/p>\n<ul>\n<li>6\u201310 rounds: 30\u201360 sec hard \/ 2\u20133 min easy<br \/>\nOR<\/li>\n<li>\u00a0\u201cNorwegian 4\u00d74\u201d: 4 min hard \/ 3 min easy x 4<\/li>\n<\/ul>\n<p>Rule: Recover like it matters. This is a stimulus day.<\/p>\n<h3>Day 4 \u2014 Strength (White Matter Builder)<\/h3>\n<ul>\n<li>Repeat Day 1 template with different movements<\/li>\n<li>Keep volume moderate, form sharp<\/li>\n<\/ul>\n<h3>Day 5 \u2014 Open-Skill Conditioning (Global Cognition)<\/h3>\n<p><strong>Pick one:<\/strong><\/p>\n<ul>\n<li>Martial arts \/ boxing drills<\/li>\n<li>Pick-up sport<\/li>\n<li>Dance class<\/li>\n<li>Reactive agility ladder \/ cone drills with a partner<\/li>\n<\/ul>\n<p>Why it works: You\u2019re processing, reacting, learning\u2014your brain has to adapt.<\/p>\n<h3>Day 6 \u2014 Optional Pump + Walk<\/h3>\n<ul>\n<li>Short hypertrophy session (30\u201345 minutes) or long walk<\/li>\n<li>Keep it fun, not punishing<\/li>\n<\/ul>\n<h3>Day 7 \u2014 Off (Real Off)<\/h3>\n<ul>\n<li>Light movement only<\/li>\n<li>One \u201cunplugged\u201d block: 20\u201330 minutes without screens<\/li>\n<li>Plan next week\u2019s one new skill session (language, instrument, sport)<\/li>\n<\/ul>\n<figure class=\"wp-caption \"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.muscleandfitness.com\/wp-content\/uploads\/2026\/03\/Stimulated-Mind-hi-res-cover.jpg?quality=86&amp;strip=all\" alt=\"Stimulated Mind hi res cover\" width=\"1180\" height=\"1794\" data-fallback-img=\"https:\/\/i0.wp.com\/www.muscleandfitness.com\/wp-content\/uploads\/2026\/03\/Stimulated-Mind-hi-res-cover.jpg?quality=86&amp;strip=all\"><figcaption class=\"wp-caption-text\"><span class=\"credit\">Stimulated Mind hi res cover<\/span><\/figcaption><\/figure>\n<p><strong>Follow Dr. Wood on Instagram <a href=\"https:\/\/www.instagram.com\/drtommywood\/?hl=en\" target=\"_blank\" rel=\"noopener\">@drtommywood<\/a>\u00a0and stay sharp at any age by <a href=\"https:\/\/www.amazon.com\/Stimulated-Mind-Future-Proof-Brain-Dementia\/dp\/0593797817\" target=\"_blank\" rel=\"noopener\">purchasing <em>The Stimulated Mind<\/em><\/a><\/strong><\/p>\n<p class=\"inmi-source\">Source: <a href=\"https:\/\/www.muscleandfitness.com\/anti-aging\/wellness\/dr-tommy-wood-shares-his-science-backed-strategy-to-prevent-cognitive-decline-after-40\/\" target=\"_blank\" rel=\"noopener nofollow\">Life \u2013 Fitness \u2013 muscleandfitness<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>There is a quiet realization baked into each of our lives. It says that sometime after 40, your edge dulls, focus slips, and recall lags. You trade in being \u201cdangerous for becoming \u201cexperienced.\u201d Your conversations revolve around what you used\u2026<\/p>\n","protected":false},"author":1,"featured_media":15087105,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[199],"tags":[],"class_list":["post-15084587","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-travel"],"featured_image_urls":{"full":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press.jpg",1109,614,false],"thumbnail":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press-300x166.jpg",300,166,true],"medium":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press-620x343.jpg",620,343,true],"medium_large":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press-768x425.jpg",768,425,true],"large":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press-940x520.jpg",940,520,true],"1536x1536":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press.jpg",1109,614,false],"2048x2048":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press.jpg",1109,614,false],"post-thumbnail":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press-998x614.jpg",998,614,true],"ignition_item":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press-670x446.jpg",670,446,true],"ignition_item_lg":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press.jpg",1109,614,false],"ignition_article_media":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press-510x510.jpg",510,510,true],"ignition_minicart_item":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press-160x160.jpg",160,160,true],"profile_24":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press.jpg",24,13,false],"profile_48":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press.jpg",48,27,false],"profile_96":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press.jpg",96,53,false],"profile_150":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press.jpg",150,83,false],"profile_300":["https:\/\/www.inthacity.com\/news\/wp-content\/uploads\/2026\/03\/15084587-male-elderly-old-bench-press.jpg",300,166,false]},"author_info":{"display_name":"news.iNthacity","author_link":"https:\/\/www.inthacity.com\/news\/author\/atombo\/"},"category_info":"<a href=\"https:\/\/www.inthacity.com\/news\/articles\/travel\/\" rel=\"category tag\">Travel<\/a>","tag_info":"Travel","comment_count":"0","_links":{"self":[{"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/posts\/15084587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/comments?post=15084587"}],"version-history":[{"count":1,"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/posts\/15084587\/revisions"}],"predecessor-version":[{"id":15087104,"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/posts\/15084587\/revisions\/15087104"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/media\/15087105"}],"wp:attachment":[{"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/media?parent=15084587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/categories?post=15084587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.inthacity.com\/news\/wp-json\/wp\/v2\/tags?post=15084587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}