5 Lbs of Fat vs Muscle: The Truth About Getting Lean
Are you tired of not fitting into your clothes despite months of dieting and exercising? Did you know that fat takes up more space than muscle? Tune in to learn more about 5 lbs of fat vs muscle!
You’ll learn why losing fat while gaining muscle is key to losing inches and achieving a lean, mean physique. You’ll also gain a better understanding of why maintaining muscle mass is essential as we age.
Finally, you’ll find actionable tips on how to lose 5 pounds of fat and gain muscle while monitoring your progress for optimal results.
It’s time to stop obsessing over the number on the scale and start focusing on body composition! So, let’s get started on the journey toward a leaner, healthier body.
Short on time? Don’t leave now! Scroll to the bottom for health hacks you can implement TODAY.
The Difference Between 5 Lbs of Fat vs Muscle

Are you chasing after a lean shape by solely focusing on fat loss, only to feel unsatisfied with the results?
What if I told you that the key to achieving that strong, lean look you desire might actually lie in building more muscle?
It’s true!
The difference between 5 pounds of fat vs muscle is significant. While both muscle and fat weigh the same, 5 pounds of muscle takes up less space than 5 pounds of fat due to its greater density.
In fact, each pound of fat takes up 15-20% more space than muscle. And it appears fluffy and dimpled- probably not the look you are going for!
Muscle, on the other hand, is smooth and firm and more likely to give you that toned look you crave.
So, if you replace 5 lbs of fat with 5 lbs of muscle, your total body weight will stay the same but your clothing sizes will surely drop! Say what?
It’s All About Metabolism: Lose Fat and Gain Muscle
OK, now you know muscle takes up less space than fat. So even if you lose a significant amount of weight, you may be unsatisfied with your appearance.
That’s because if most of that weight loss was from muscle, you may not get leaner, only lighter.
But there’s more to it! Building muscle can increase your basal metabolic rate (metabolism), which means you burn more calories at rest. This translates to more efficient calorie burning and makes it easier to achieve your weight loss goals.
In contrast, fat is stored energy that doesn’t contribute to calorie burn at rest.
Additionally, reducing excess body fat can improve overall health outcomes by reducing the risk of diseases such as diabetes and heart disease.
So, it’s clear that losing fat and gaining muscle isn’t just about how you look, but also plays a crucial role in maintaining optimal health.
Maintaining Muscle Mass As You Age
It’s no secret that our bodies change as we get older, and one of those changes is a loss of muscle mass, also known as sarcopenia. But it’s not just about how you look!
Losing muscle changes the way you age and can have a significant impact on your quality of life.
Why You Should Make Muscle a Priority
Unleash Your Inner Superwoman. Picture yourself feeling strong and capable, effortlessly tackling any physical task that comes your way. By preserving muscle mass, you can stay independent and rock those everyday activities.
Supercharge Your Metabolism. Want a metabolism that keeps humming along like a well-oiled machine? More muscle means more calories burned, even while we’re chilling on the couch or catching up on our favorite Netflix shows. Talk about a win-win!
Build a Fortress of Strong Bones. By keeping those muscles active and strong through resistance exercises, you fortify your skeletal system, reduce the risk of fractures and osteoporosis, and keep your bones strong and sturdy.
Play Defense Against Injuries. Life is full of unexpected twists and turns, and you want to be prepared, right? Well-developed muscles act as your body’s armor, providing stability and protecting your precious joints and ligaments.
Embrace the Power of Aging Gracefully. Aging is a beautiful journey, and we want to enjoy every step of it. Preserving muscle mass keeps you energized and vibrant, so you can savor life’s moments, stay active, and relish the joys of healthy aging!
Master Your Blood Sugar. Muscles are a storage site for glucose, the fuel your body uses for energy. More muscle mass improves your body’s ability to manage and control blood sugar levels. This reduces the risk of insulin resistance and type 2 diabetes.
Defend Against Diseases. Building muscle increases your “good” cholesterol (HDL) and decreases your “bad” cholesterol (LDL). Muscle also reduces inflammation during exercise (1). This lowers the risk of heart disease and other obesity-related diseases.
Why It’s More Difficult to Gain or Maintain Muscle as We Age (Especially for Women)

Once you hit 40, it becomes increasingly difficult to gain and maintain muscle mass. This is particularly true for women.
Hormonal changes, decreased activity levels, and poor nutrition are to blame. Women tend to have less muscle mass than men to begin with, making it even more challenging to build and maintain muscle.
Getting enough restful sleep can also play a significant role in maintaining muscle mass as you age. Unfortunately hormonal shifts and increasing stress levels can impact sleep.
But wait! There’s hope.
Recent research (2) is shaking things up when it comes to our metabolism and aging. Turns out, the slowdown in metabolism doesn’t hit until after 60. That’s later than we thought!
The study found a strong link between more lean body mass (everything but the fat) and a faster metabolism. And here’s the good news: when they factored in lean body mass, the metabolism slowdown didn’t happen until after 60.
So those metabolic changes we dread before hitting that milestone? Not set in stone!
But wait, there’s more.
Many folks start losing bone and muscle earlier than age 60. That’s why preserving lean body mass at any age is key for disease prevention and a healthy metabolism.
How to Lose 5 Lbs of Fat and Gain Muscle
As a dietitian, I’m all about building a healthy, strong body! So let’s approach this topic from a different perspective.
Instead of focusing on losing weight, how about we talk about ways to achieve a balanced body composition? It’s all about finding that sweet spot where you feel confident and energized.
Here are some tips to help you sculpt a physique that you’ll love.
Pump Up the Protein

Think of protein as the building blocks for your muscles, like the sturdy bricks that construct a beautiful house.
Aim to consume around 1 gram of protein per pound of ideal body weight each day, with a minimum of 120 grams. So if your ideal body weight is 135 pounds, try to consume between 120-135 grams of protein a day, especially if you are over 40.
Whether it’s lean meats, poultry, fish, eggs, or plant-based sources like legumes or tofu, get your protein game on point.
Carbs: Energize Like a Pro
Think of carbs as the fuel that powers your workouts, like a high-octane energy drink for your muscles. They provide the energy you need to rock your workouts and help replenish energy stores for optimal performance.
Opt for whole grains, fruits, veggies, and legumes to get a healthy dose of carbs.
Portions Matter
Keep an eye on portion sizes and calorie intake.
You want to be in a calorie deficit to shed fat, but make sure you’re meeting your protein needs to support muscle growth. It’s all about finding that sweet spot.
Nourish with Wholesome Foods

Picture it as painting your body with a rainbow of colors, providing the essential vitamins, minerals, and antioxidants your body needs to keep your metabolism revved up.
Fill your plate with nutrient-dense foods, like fruits and vegetables, whole grains, and healthy fats. Focus on a healthy diet to enhance your weight loss journey.
Pro-tip: Eating the right foods will also help reduce cellulite, that dimpled fat that often appears on your legs and arms.
Strength Train Like a Champ
Regular resistance exercise challenges your muscles and promotes the growth of lean muscle tissue. Not only will you build strength, but you’ll also increase your metabolism and promote overall body composition.
Start by incorporating resistance exercises into your routine, like lifting weights, using resistance bands, or even your body weight. It’s like building a solid foundation for a mighty fortress.

Aim for at least two to three sessions per week, allowing your muscles to adapt and grow stronger over time. Make it a date with yourself and watch your strength soar.
Whether it’s squats, lunges, push-ups, or bicep curls, select movements that challenge you but are still manageable. Remember, this is your journey, and you’re in control!
Get Your Groove On
Incorporate cardiovascular exercise and movement into your routine. Think of it as revving up your engine, like going for a brisk walk, jogging, cycling, or dancing.
Cardiovascular activities help you shed body fat while preserving your hard-earned muscle. Even short bursts of movement can make a big difference!
Pro-tip: Consider your fitness level before beginning a new workout program. It’s far better to start low and go slow than to push too hard and risk injury.
Prioritize Rest and Recovery
Muscles need time to repair and grow stronger. Give yourself permission to rest and recover!
Get plenty of quality sleep, practice stress management techniques, and listen to your body’s signals to avoid overtraining.
What About Intermittent Fasting?
So, you’ve heard all the buzz about intermittent fasting (IF), and perhaps you’re wondering if it’s for you. A conversation on losing fat and gaining weight wouldn’t be complete without a discussion on IF!
What is Intermittent Fasting?
Intermittent fasting is a popular method for losing fat and gaining muscle. It involves alternating periods of eating and fasting.
IF is often referred to in terms of the eating window or number of hours during which you eat. People will often start with a 12-hour eating window, say 7 am to 7 pm, and progress to a 10 or 8-hour eating window.
One of the benefits of intermittent fasting is that it promotes the loss of fat while preserving muscle mass. Adding strength training exercises and eating adequate protein can work with IF to increase these effects.
Benefits of Intermittent Fasting
Fueling Fat Loss. IF can be your secret weapon against stubborn fat. By restricting your eating window, you give your body a chance to tap into fat stores for energy.
Embracing Autophagy. Autophagy is like your body’s natural recycling system. During fasting periods, autophagy kicks into high gear, breaking down old and damaged cells, and making way for new, healthy ones.
Hormonal Harmony. Intermittent fasting plays a fascinating role in hormonal balance. It can help optimize insulin sensitivity, growth hormone production, and testosterone levels—all critical factors for muscle growth and fat loss.
Mindful Eating. It’s not just about when you eat, but also how you eat. IF encourages mindful eating, where you savor and appreciate your meals fully. By tuning in to your body’s hunger and satiety cues, you build a healthier relationship with food.
Customization. IF is not a one-size-fits-all approach. Experiment with different fasting protocols and find the right fit for you!
The Importance of Sleep

Are you ready to unlock the secret to maximizing your muscle gains and shedding unwanted fat while you sleep?
Getting enough quality sleep is crucial for hormone regulation. When you’re well-rested, hormones like ghrelin and leptin, which control hunger and satiety, stay balanced.
But lack of sleep can throw them off, leading to overeating and weight gain.
Sleep is also the time when your body repairs and builds new muscle tissue. If you miss out on quality sleep, all of that hard work at the gym can go to waste!
Aim for 7-8 hours of uninterrupted sleep each night to improve your overall health and support your fitness goals.
Establish a regular bedtime routine and create a cozy sleep environment for optimal rest.
So, let’s prioritize sleep and let our bodies recharge, repair, and wake up refreshed for a successful fitness journey!
Lose Fat, Not Water

We’ve all been there, wanting to drop a few pounds quickly. But here’s the thing: losing water weight may give you a temporary boost on the scale, but it’s not the real deal. It’s like a magician’s trick that vanishes as quickly as it appears.
So, let’s focus on the real prize—fat loss!
H2O to the Rescue! Water is your secret weapon. Staying hydrated is key to flushing out toxins, supporting digestion, and maintaining optimal body functions.
Plus, it helps prevent dehydration, which can sabotage your weight loss efforts. So, sip that water throughout the day and let it work its magic.
Pro-tip: Fruits and veggies are loaded with water and other muscle-boosting nutrients, so eat plenty throughout the day to get strong and lean!
How to Monitor Your Progress
You know you need to stay the course to be successful, right?
Monitoring your journey is like having a personal GPS guiding you toward your goals. It helps you stay on track and reap the benefits!
Measure Body Fat
Keeping tabs on your body fat percentage is a fantastic way to gauge your progress. One handy tool for this is a body fat scale. It’s super easy to use—just step on, and it gives you a readout of your body fat percentage.
The goal is less body fat and more muscle rather than targeting a goal weight.
Aim for a healthy range, which, according to the American Council on Exercise (ACE), is between 10 and 31 percent body fat for women. It’s like having a personal fat detective right in your bathroom!
Snap a Picture
Say cheese! Take regular photos of yourself from different angles to see how your body composition changes over time. Those side-by-side comparisons will blow your mind and keep you motivated to continue pushing forward.
Measure Inches

Get out that trusty measuring tape and record your body measurements. Focus on key areas like your waist, hips, thighs, and arms. Watching those numbers shrink (or grow, in the case of muscles) is incredibly satisfying.
A waist circumference measurement of more than 35 inches for non-pregnant women and 40 inches for men may indicate a higher risk of obesity-related health conditions.
Keep a Workout Log
Jot down the exercises you do, the sets and reps, and how you feel during each session. It’s a great way to see your progress, identify patterns, and adjust your routine if needed.
Set the Right Goals
Set your sights on realistic and reasonable goals. It’s not about aiming for overnight transformations; it’s about embracing a journey of continuous improvement. Break your big goals into smaller milestones, and celebrate each victory along the way!
5 Lbs of Fat vs Muscle: No Simple Answer
Losing 5 lbs of fat and gaining muscle is all about finding balance.
To lose fat and gain muscle, create a modest calorie deficit, eat a well-rounded diet with lean protein, healthy fats, and complex carbs, incorporate strength training and cardio, and stay consistent. And, if you feel so inclined, try intermittent fasting.
Moral of the story: with the right approach, you can achieve your goals and rock a healthier, fitter body. You’ve got this!

Health Hacks
Nutrition Newbie
Aim to consume about 1 gram of protein per pound of ideal body weight to help increase muscle mass (3). So if your target weight is 135 pounds, aim to consume 135 grams of protein per day.
Health Enthusiast
You’re already consuming adequate protein, so why not get started on a resistance training program? Combining resistance training with adequate protein levels is the best way to gain muscle and lose fat (4).
Wellness Guru
To get the most out of your muscle-building and fat-loss efforts, give your sleep routine a little TLC. Keep the same bedtime and wake time, invest in blackout curtains, and implement a soothing bedtime ritual. Bonus points for getting natural sunlight shortly after waking to help regulate your circadian rhythm!

Pam is a Registered Dietitian Nutritionist with a Master’s of Public Health and a Certificate in Integrative and Functional Nutrition. Passionate about the science of health and nutrition, she loves to share her knowledge to help others live healthy, vibrant lives. When not working, Pam can be found hiking, traveling, and enjoying great-tasting, nutritious food.