Why Fitness Feels Harder as We Age (And What You Can Do About It)
At some point, most people notice it.
Recovery takes a little longer.
Strength doesn't seem to come quite as easily.
A weekend of hard training feels more tiring than it used to.
And suddenly you hear people saying:
"I'm just getting old."
While ageing does bring some natural changes to the body, the reality is more encouraging than many people realise.
Many of the things we associate with ageing aren't caused by age alone.
They're often influenced by reduced activity levels, loss of muscle mass, lifestyle changes, and years of accumulated habits.
The good news?
There is a lot we can do about it.
What Actually Happens as We Age?
Ageing affects every system in the body.
This doesn't mean decline is inevitable.
But understanding the changes can help us make better decisions.
Some of the most important changes include:
loss of muscle mass
reductions in strength and power
decreases in bone density
slower recovery
reduced cardiovascular fitness
changes in balance and coordination
The key thing to remember:
These changes are influenced by how we live, train and recover. Not just by the number of candles on a birthday cake.
Muscle Loss: Use It or Lose It 💪
One of the biggest age-related changes is the gradual loss of muscle mass.
This process is known as sarcopenia.
From around our thirties onwards, adults can begin losing small amounts of muscle each decade if they do nothing to maintain it.
Why does this matter?
Because muscle isn't just about looking athletic.
Muscle helps us:
move efficiently
produce force
stay independent
maintain balance
support joints
regulate blood sugar
maintain metabolic health
Loss of muscle often means:
reduced strength
reduced power
slower movement
increased injury risk
reduced quality of life
The good news?
Muscle responds incredibly well to training, even later in life.
Research consistently shows that strength training can help maintain and build muscle well into older adulthood.
Bone Density Matters Too 🦴
Bones are living tissue.
Just like muscles, they respond to the demands placed upon them.
As we age, bone density can gradually decrease.
This can increase the risk of:
fractures
falls
osteoporosis
reduced mobility
One of the best ways to support bone health is through movement.
Particularly:
strength training
resistance exercise
walking
running
jumping and impact-based activities where appropriate
Bones need a reason to stay strong.
Exercise provides that reason.
Why Recovery Can Feel Different 🔄
Many people notice recovery becomes less forgiving with age.
There are several reasons for this:
reduced muscle protein synthesis
lifestyle stress
work commitments
family responsibilities
poorer sleep quality
accumulated training history
Often it's not age alone.
It's the combination of life and training.
The solution isn't necessarily training less.
It's recovering better.
Sleep, nutrition, hydration and intelligent programming become increasingly important.
Cardiovascular Fitness Changes Too ❤️
Aerobic fitness naturally declines over time if it's not maintained.
One measure often used is VO₂ max, which reflects the body's ability to utilise oxygen during exercise.
The good news?
Regular endurance training can significantly slow this decline.
Activities such as:
running
cycling
swimming
rowing
brisk walking
all help support cardiovascular health.
A strong cardiovascular system doesn't just improve performance.
It also supports long-term health, independence and quality of life.
Your Brain Benefits Too 🧠
One of the most overlooked benefits of exercise is what it does for the brain.
Regular physical activity has been associated with:
improved memory
better concentration
improved mood
reduced stress
reduced risk of cognitive decline
better sleep quality
Exercise increases blood flow to the brain and stimulates the release of chemicals that support brain health and function.
In other words:
Training isn't just an investment in your body.
It's an investment in your mind.
We Don't Stop Moving Because We Get Old...
A common belief is that ageing causes us to become less active.
In reality, the relationship often works both ways.
As work, family commitments and daily responsibilities increase, many people gradually move less without even realising it.
Hours spent sitting at desks, in cars and on sofas begin to replace the regular movement we once took for granted.
Over time, this reduction in activity can contribute to:
loss of muscle mass
reduced cardiovascular fitness
poorer mobility
lower energy levels
reduced bone density
Which is why there is so much truth in the phrase:
"We don't stop moving because we get old. We often get old because we stop moving."
Ageing is inevitable.
Becoming inactive doesn't have to be.
Don't Forget About Power ⚡
When people think about ageing, they often focus on strength.
But research suggests that power declines faster than strength as we age.
Power is your ability to produce force quickly.
It's what helps you:
sprint for a bus
react to a trip or stumble
jump
change direction
catch yourself when you lose balance
Maintaining power is important for both performance and everyday life.
This doesn't mean everyone needs to become a sprinter.
But including some faster movements where appropriate can be valuable.
Examples include:
hill sprints
strides during runs
cycling efforts
kettlebell swings
medicine ball throws
jumping and hopping drills
moving lighter weights with intent
The goal isn't maximum intensity.
The goal is reminding the body how to move quickly and efficiently.
What This Means for You
The good news is that while ageing brings certain physiological changes, many of the factors that influence how we feel and perform remain within our control.
You don't need to train like a professional athlete.
You don't need to spend hours in the gym every day.
What matters most is staying consistently active and giving your body a reason to maintain the qualities that support health and performance.
💪 Strength Training
Aim for at least 2 sessions per week.
Strength training helps maintain:
muscle mass
strength
bone density
balance
independence
Remember, muscle is a use-it-or-lose-it tissue.
The more reason you give your body to keep it, the more likely it is to do so.
❤️ Cardiovascular Exercise
Aim for approximately:
150–300 minutes of moderate intensity activity per week, or
75–150 minutes of vigorous activity per week
This could include:
walking
running
cycling
swimming
rowing
sports and recreational activities
Regular cardiovascular exercise supports both physical and mental health while helping maintain fitness as we age.
⚡ Don't Neglect Power
Power tends to decline faster than strength.
Including some faster movements where appropriate can help maintain athleticism, balance and confidence.
Examples include:
hill sprints
strides
cycling efforts
kettlebell swings
medicine ball throws
jumps and hops
The goal isn't to move recklessly.
It's to continue moving with intent.
🚶 Move More Every Day
Formal exercise is important.
But so is everything that happens between workouts.
Walking, taking the stairs, carrying shopping, gardening and generally spending less time sitting all contribute to long-term health.
Sometimes the biggest improvements come from simply moving more often.
🥩 Prioritise Recovery and Nutrition
As we age, recovery becomes increasingly important.
Focus on:
quality sleep
sufficient protein intake
hydration
stress management
Training provides the stimulus.
Recovery is where adaptation happens.
🎯 Focus on Consistency
The goal isn't to stop ageing.
The goal is to age well.
A consistent approach to movement, strength training and cardiovascular exercise will almost always outperform short bursts of perfection followed by inactivity.
Because the best training plan isn't the hardest one.
It's the one you can still see yourself doing in 10 years' time.
🔬 The Science Behind Healthy Ageing
Many of the physical declines associated with ageing are linked to reduced activity levels rather than ageing itself.
Research consistently shows that physically active individuals maintain:
more muscle mass
greater strength
better cardiovascular fitness
stronger bones
better cognitive function
than their inactive peers.
In many cases, the gap between an active 60-year-old and an inactive 40-year-old can be surprisingly small.
The human body is remarkably adaptable.
It continues responding to exercise throughout life.
The Coached FITT Takeaway 🧡
Ageing is inevitable.
Declining function doesn't have to be.
Yes, the body changes over time.
But movement remains one of the most powerful tools we have to support our health, fitness and quality of life.
The goal isn't to stop ageing.
The goal is to age well.
Build muscle.
Challenge your heart.
Look after your bones.
Move with purpose.
Stay active.
Keep learning.
Because some of the fittest, strongest and most capable people you'll meet aren't young.
They're simply people who never stopped looking after themselves. 💪🧡