Your Mindset Toward Aging Matters Across the Decades: Here’s Why

Many of us have seen both ends of the aging spectrum, from the vitality of youth and raising kids to caring for older parents. Have you ever wondered why some do better with each passing decade, and some do not? Do fitness, social activities and focused health and wellness make the difference? Or is it an added piece of psychology and mental outlook on aging itself? While the pillars of fitness, health and nutrition are critical to aging, so is your attitude about aging.

Science is now proving that aging is not an inevitable decline; it’s a path shaped by the story you tell yourself. A recent landmark study published in Geriatrics (2026) reveals a game-changing finding: 45.15% of older adults improved in physical or cognitive function over time. Even after controlling for health status, age, BMI, education and ethnicity, simply holding positive beliefs about aging directly predicted these gains. Those people with a positive attitude who saw aging as another decade for personal goals of achievement did much better than those who thought aging was living with one foot in the grave.

‘Age is Just a Number’ Attitudes

We have all seen inspirational people who have aged gracefully, but we have also seen people in their late 20s and 30s thinking their better years are behind them. I remember 50-plus-year-old Navy SEALs working out with us when we were young 20-year-old candidates, and all we had to do was keep up. They wrecked us and showed us early on that age is just a number with the right attitude and consistency in thinking positively about getting better each year on this Earth.

Each decade offers opportunities to excel in something and enjoy an active lifestyle, full of movement and fun, if you stay consistent with eating right, sleeping well and exercising. These are three non-negotiables that enable you to remain independent later in life, mentally sharp and healthy. Without these, the opportunities are going to be more limited each decade you survive. The good news is that you can start anytime! The inspirational stories below prove just that:

Your 40s

“I can’t do what I used to do.”

Reality: Your actions at 40 years old can make or break the next two decades.

Inspiration: You may recover more slowly and have a few more aches and pains than when you were 20, but adding flexibility and mobility training can be life-changing for you in your 40s. See the Mobility Day I created at age 45 that has changed everything. Countless people are still serving in the military in their 40s (and above), passing fitness tests; and being first responders, helping people with their worst day ever as police and firefighters. You have so much more in your 40s than people realize.

Your 50s

“My peak physical performance is behind me.”

Reality: Midlife can mark your peak endurance and mental clarity if you reframe training and recovery. But you can gain muscle and strength now and for decades to follow. Don’t stop training.

Inspiration: Former Navy SEAL David Goggins, an ultra-endurance athlete, competes in the Moab 240 Mile race at age 50 and places 21st overall. As Goggins says, “When you think you are done, you still have 40% left!” Don’t give up just because you turn 50. I refused to call myself an “aging athlete” but embraced the term “ageless athlete” and at age 55 wrote the book, “Ageless Athlete (Fitness Over 50).”

Your 60s

“Extreme feats of physical strength are too risky.”

Reality: Human endurance and resilience often peak late when coupled with mental grit. If you become consistent with your training, you develop discipline and mental toughness with each decade. Declines are minimal with endurance, with science showing as little as a 1% drop in cardiovascular abilities in your 60s.

Inspiration: Cliff Young, an Australian farmer, won a 544-mile endurance race at 61 years old, proving that tenacity increases with age (full article). He continued to run until he was 78 years old, when he competed in a six-day ultra-marathon race.

Your 70s

“Strength, flexibility and balance naturally disappear.”

Reality: Neuromuscular responsiveness and mobility can be cultivated at any age with consistency. Strength and muscle mass can also be gained in your 70s/80s (study).

Inspiration: Johanna Quaas, recognized as the world’s oldest competitive gymnast, was performing parallel bar and floor routines well into her 70s, 80s and 90s. She could do pullups in her 90s!

Your 80s

“Intense cardio and triathlon racing belong to youth.”

Reality: Cardiovascular capacity adapts to demand regardless of chronological age. Learn about biological age vs chronological age.

Inspiration: Sister Madonna Buder (“The Iron Nun”) completed the Hawaii Ironman at age 82, having finished over 45 Ironman triathlons after taking up running in her late 40s.

Your 90s & Beyond

“Old age is for sitting back.”

Reality: Muscle recruitment, functional strength and vitality remain trainable deep into your late years (study).

Inspiration: Takishima Mika became Japan’s oldest fitness instructor at age 90 after starting her fitness journey at 65. You have so much life experience to offer. Don’t just sit on it.

How to Rewire Your Age Beliefs Today

Believe it or not, I get emails from 25-year-olds asking if they are too old to go to boot camp, thinking it is for “teenagers.” While the starting age to serve is 18 years old (17 with parental permission), most services allow for new recruits to be in their 30s and 40s. And depending on the job, you can be in your 50s (chaplain, doctor, dentist, etc.). Never look at age as a small window to serve (or do anything). Think of it more as a barn door with a wide age range full of possibilities – if – you start taking care of yourself.

Change your mindset and internal dialogue, and swap the labels of “aging” or “declining” with “experienced” or “seasoned.” Do a quick search, and open your eyes to both ends of the aging spectrum of those who are still highly active and those who are not. Seek out role models who break the conventional age stereotypes. For instance, there is a retired command sergeant major in my neighborhood who is 85. He still rides his bike, works out at the gym and stops to speak to the young guys working out. I remember him in his early 60s still doing Ironman Triathlons when I first moved into the neighborhood.

Having a growth mindset is key to taking charge of each decade in your life. Approach new skills, strength training, endurance training, mobility work and memory games with expectations of growing, not just maintaining. See more about longevity and human performance in the Military.com Fitness Section.