Many people looking to lose weight ask the same question:
“Should I do more cardio to lose fat faster?”
As a Personal Trainer in St John’s Wood, I hear this all the time. While cardio certainly has its place in a healthy fitness routine, relying on endless running, cycling, or HIIT sessions isn’t always the most effective way to achieve long-term fat loss.
If your goal is to lose body fat, improve your physique, and maintain your results, it’s important to understand how your metabolism really works.
Why More Cardio Isn’t Always the Answer
Cardio burns calories during your workout, which is why many people automatically increase their cardio when they want to lose weight.
However, there are two major problems with using cardio as your primary fat-loss strategy.
Your Body Quickly Adapts
When you first start running, cycling, or attending fitness classes, you may see results quickly. The problem is that your body becomes more efficient over time.
The same 30-minute run that initially burned a significant number of calories will eventually burn fewer calories as your fitness improves. To continue seeing results, you often need to exercise longer or at a higher intensity.
For most busy professionals in St John’s Wood, this approach simply isn’t sustainable.
Too Much Cardio Can Reduce Muscle Mass
Muscle plays a vital role in maintaining a healthy metabolism.
When people combine excessive cardio with a calorie-restricted diet, they risk losing muscle alongside body fat. This can slow down their metabolism and make future fat loss more difficult.
Put simply:
Less muscle = fewer calories burned at rest.
That’s why many people find themselves stuck in a cycle of losing weight, regaining it, and starting over.
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The Best Fat Loss Strategy: Build Muscle
The most successful fat-loss transformations I see as a personal trainer involve building and maintaining lean muscle.
Strength Training Boosts Your Metabolism
Strength training helps preserve and build muscle tissue while you’re losing body fat.
More muscle means your body burns more calories throughout the day, even when you’re resting.
A well-structured strength training programme can help you:
- Increase lean muscle mass
- Improve body composition
- Burn more calories at rest
- Improve posture and strength
- Maintain long-term fat-loss results
This is why strength training forms the foundation of many successful fat-loss programmes.
Focus on Nutrition First
No amount of cardio can compensate for poor nutrition.
If fat loss is your goal, focus on:
- High-quality protein sources
- Vegetables and fruit
- Whole foods
- Adequate hydration
Protein is especially important because it helps preserve muscle while dieting and keeps you feeling fuller for longer.
Many clients are surprised to discover that improving their nutrition often produces better results than adding extra cardio sessions.
Increase Daily Movement (N.E.A.T.)
One of the most overlooked fat-loss tools is N.E.A.T. (Non-Exercise Activity Thermogenesis).
This includes all movement outside of structured exercise, such as:
- Walking to work
- Taking the stairs
- Walking after meals
- Household chores
- Walking the dog
Small increases in daily movement can significantly increase calorie expenditure without negatively affecting recovery.
For many clients, simply increasing their daily step count produces better results than adding more intense cardio sessions.
Sleep and Recovery Matter More Than You Think
Poor sleep can increase hunger, reduce motivation, and negatively affect hormone balance.
To support healthy fat loss:
- Aim for 7–9 hours of sleep per night
- Stay well hydrated
- Manage stress levels
- Allow adequate recovery between workouts
Your body changes and adapts during recovery, not during the workout itself.
Should You Do Cardio?
Absolutely.
Cardio is excellent for:
- Heart health
- Endurance
- Stress management
- General fitness
However, cardio should support your fat-loss plan, not become the entire plan.
The most effective approach combines:
- Strength training
- Good nutrition
- Daily movement
- Quality sleep and recovery
Personal Training for Fat Loss in St John’s Wood
If you’re struggling to lose body fat despite spending hours doing cardio, it may be time for a different approach.
At Personal Trainer St John’s Wood, I help busy professionals build strength, improve body composition, and achieve sustainable fat-loss results through personalised training and nutrition guidance.
Rather than relying on endless cardio sessions, we’ll focus on building muscle, improving your metabolism, and creating habits that deliver long-term results.
Ready to Get Started?
If you’re looking for an experienced Personal Trainer in St John’s Wood to help you lose fat, build muscle, and feel your best, get in touch today to discuss your goals.

YES! Contact me today to schedule a FREE no obligation consultation and trial workout.