This article is for general information only and is not intended as medical advice. Always consult a qualified health professional for personal guidance.
If you’ve ever responded to slow progress by adding more walks, longer runs, or extra cardio sessions, you’re not alone.
For a long time, “more cardio” has been seen as the default solution for weight loss, energy, and overall fitness. And to a point, cardio can absolutely be part of a healthy routine.
But if you’re over 35, you may have started to notice something different.
More cardio doesn’t always lead to better results anymore.
In some cases, it can leave you feeling more tired, more frustrated, and no closer to where you want to be.
This isn’t because you’re doing anything wrong. It’s because your body-and your life-may need a more balanced approach now.
Why “More Cardio” Became the Go-To
For years, cardio has been associated with burning calories and supporting weight loss.
It’s accessible, familiar, and often feels productive. You finish a session feeling like you’ve “done something,” which can be motivating.
But this idea—that more cardio equals better results—doesn’t always hold up over time, especially as your body changes.
Why Doing More Cardio Isn’t the Answer Anymore
If your current routine relies heavily on cardio, you may be noticing diminishing returns.
Here are some of the reasons why.
1. Your Body Adapts Quickly
Your body is designed to become more efficient at repeated activities.
If you’re doing the same type of cardio regularly-walking the same route, using the same machine, or maintaining the same pace-your body may require less effort to complete it.
What this might feel like
- The same workout feels easier than it used to
- You burn less energy doing the same activity
- Progress slows, even with consistency
A practical way to respond
- Vary your pace, terrain, or duration
- Include occasional short bursts of increased effort
- Combine cardio with other forms of movement
2. Cardio Alone Doesn’t Maintain Muscle
Muscle plays a key role in how your body feels, functions, and uses energy.
While cardio supports cardiovascular fitness, it doesn’t provide enough stimulus to maintain or build muscle on its own.
What this might feel like
- Feeling “softer” despite regular exercise
- Less strength in daily activities
- Changes in body composition, even without weight gain
A practical way to respond
- Include some form of resistance or strength training each week
- Use bodyweight, resistance bands, or weights
- Focus on gradual progression over time
3. More Cardio Can Increase Fatigue
As you move through your 30s and 40s, recovery can feel different.
Adding more and more cardio without adjusting other parts of your routine may lead to ongoing fatigue.
What this might feel like
- Feeling drained after workouts
- Low energy later in the day
- Needing more rest but still feeling tired
A practical way to respond
- Balance higher-effort days with lighter movement
- Pay attention to how you feel after sessions
- Prioritise recovery as part of your routine
4. It Can Influence Hunger and Cravings
Long or frequent cardio sessions can sometimes increase hunger.
This isn’t a problem in itself, but it can make it harder to feel balanced if you’re relying on cardio alone for weight-related goals.
What this might feel like
- Increased appetite after workouts
- Cravings for quick, high-energy foods
- Feeling like you’re “undoing” your effort
A practical way to respond
- Plan meals or snacks around your activity
- Focus on balanced meals that support energy
- Notice patterns rather than reacting to single days
5. It Doesn’t Address the Full Picture
Your health and fitness are influenced by more than just calories burned during exercise.
Strength, mobility, sleep, stress, and daily habits all play a role.
Relying on cardio alone may leave gaps in these areas.
What this might feel like
- Feeling fit in one area but lacking in others
- Limited improvement in strength or stability
- Plateauing despite effort
A practical way to respond
- Include a mix of movement types across the week
- Think beyond workouts to overall lifestyle
- Build a routine that supports your whole body
6. Your Lifestyle May Already Be Demanding
If your days are full—work, family, responsibilities—adding more cardio can sometimes feel like another demand rather than support.
What this might feel like
- Struggling to stay consistent
- Feeling pressure to “fit it all in”
- Skipping workouts due to fatigue or time
A practical way to respond
- Simplify your routine
- Choose shorter, more effective sessions
- Focus on what’s sustainable for your life
What Your Body May Need Instead
If doing more cardio isn’t the answer anymore, what is?
Often, it’s not about doing less-it’s about doing differently.
1. A Balance of Strength and Cardio
Instead of relying heavily on cardio, a mix of strength and cardiovascular movement can be more supportive.
Strength helps maintain muscle and supports how your body uses energy.
Cardio supports heart health and endurance.
Together, they create a more balanced approach.
2. Quality Over Quantity
Long sessions aren’t always necessary.
Shorter, more focused workouts can be effective, especially when they include a mix of movement types.
Examples
- A 20–30 minute strength session
- A brisk walk with a few faster intervals
- A short circuit combining strength and light cardio
3. Recovery as Part of the Plan
Rest and recovery are often overlooked.
But they play a role in how your body adapts to exercise.
Including lighter days or rest days can support consistency over time.
4. Everyday Movement Still Counts
Not all movement needs to be structured.
Walking, standing, lifting, and general daily activity all contribute to how your body feels.
These small actions can add up across the day.
Signs You Might Be Relying Too Much on Cardio
You might recognise a few of these:
- You keep adding more cardio but aren’t seeing changes
- You feel tired rather than energised after workouts
- You rarely include strength-based movement
- Your routine feels repetitive or unengaging
- You struggle to stay consistent long term
These aren’t problems-they’re simply signals that your approach might need adjusting.
A More Sustainable Way to Structure Your Week
You don’t need a rigid plan, but a simple framework can help.
You might include:
- 2–3 strength-focused sessions
- 2–3 moderate cardio sessions (walking, cycling, etc.)
- Daily light movement (steps, general activity)
- At least one lighter or rest-focused day
This balance can support both progress and recovery.
Letting Go of the “More Is Better” Mindset
It’s easy to think that doing more will lead to better results.
But often, especially after 35, more isn’t the missing piece.
A more balanced, thoughtful approach tends to be more effective-and more sustainable.
Listening to Your Body Matters More Now
Your energy levels, recovery, and overall capacity may vary from week to week.
Paying attention to these signals can help guide your decisions.
Some days may feel stronger. Others may call for lighter movement.
Both are valid.
Small Changes That Can Make a Difference
You don’t need to overhaul everything.
A few simple shifts might include:
- Replacing one cardio session with strength training
- Shortening workouts but increasing focus
- Adding short bursts of intensity instead of longer sessions
- Including one extra rest or recovery day
Over time, these small changes can support how your body feels and responds.
Bringing It All Together
If you’ve been relying on cardio and not seeing the results you expected, it doesn’t mean you’ve failed.
It likely means your body is ready for a different kind of support.
Doing more cardio isn’t the answer anymore-not because cardio isn’t valuable, but because it’s just one piece of a much bigger picture.
By including strength, allowing for recovery, and focusing on sustainable habits, you can create a routine that works with your body-not against it.
And that shift-from doing more to doing what matters-can make all the difference over time.