7 Fitness Tips That Are DESTROYING Your Metabolism After 40

If you’re over 40 and the scale is barely moving even though you’re eating clean, staying in a calorie deficit, and doing the workouts you were told would work, it’s time to question the advice, not yourself. A lot of mainstream weight loss and fitness guidance was written for a 25-year-old body, and when we apply it to perimenopause and midlife hormones, it can underperform or even backfire. 

In this episode, I'm breaking down 7 things women over 40 are still doing that are making it harder to lose weight and change their body composition. I'll tell you what each one is doing to your metabolism, and exactly what to swap in instead. 

By the end, you'll know why your effort hasn't been paying off. And what to do differently starting this week.

🔗 FIND OUT WHAT YOUR METABOLISM NEEDS RIGHT NOW Take the free What's My Metabolism Type? quiz and get a personalized starting point based on your body, not a generic plan. Click HERE.

📩 JOIN THE NEWSLETTER Weekly strategies for women over 40. Click HERE.

🎧 LISTEN TO THE PERMANENT FAT LOSS MASTERCLASS Episodes 50–53 — linked in the playlist below.

• E50: Why 95% of Diets Fail Women Over 40
• E51: Your Perfect Calorie Deficit for Fat Loss Over 40
• E52: How to Stop Dieting Without Gaining the Weight Back (Reverse Dieting Explained)
• E53: How to Eat Out, Travel, and Live Your Life Without Gaining the Weight Back

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👋🏻 ABOUT ME:
I'm Andrea, a NASM-certified nutrition and fitness coach and founder of Behind the Body. For years, I tried every diet imaginable, avoided weights, and stuck to cardio, all in pursuit of being skinny. None of it worked. At 40, I overhauled my approach and started lifting 3–4 times a week. Now at 45, I have the strong, toned body I spent decades chasing, and I've maintained it for 10 years using the same simple approach. I help women over 40 simplify their approach, build real strength, and get results that actually last. Every week I cover the science, the strategy, and the honest truth about fat loss and maintenance for women over 40.


MEDICAL DISCLAIMER: The content in this podcast is for informational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before making changes to your diet, exercise, or health regimen.

Transcript

Welcome And The Real Problem

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Welcome to Behind the Body. I'm Andrea, certified nutrition and fitness coach. In my 30s, I lost 20 pounds and I maintained it well through my 40s. Every week here, we talk about what's really happening with perimenopause and weight gain, what to do about it, and the brutal but beautiful truth about this stage of life. Whether you're just starting or tired of starting over, you are in the right place, and I'm so happy you're here. Let's dive in. Are you 40, 45, or in your 50s? You want to lose weight, build some muscle, or ideally both, and you're following all the advice. You're Googling health and fitness tips. You're using ChatGPT for a diet plan. You're eating clean, staying in a calorie deficit, doing your cardio, and watching the scale. And it's just not working. At least not the way that it used to. I need to tell you something, my friend. It's not you. It's the advice. There are seven pieces of advice that I see women in our season of life doing that make a lot of sense intuitively, but that are actively making fat loss so much harder. And by the end of this episode, you're gonna know exactly what to stop doing, what to swap instead, and why your effort is finally going to pay off. Here's something that no one says clearly enough. Most fitness advice was not written for us. It was written for a 25-year-old with a completely different hormonal reality than you and I are in right now. And when you take advice that's built for somebody else's body and apply it to yours, especially for us women over 40, it doesn't just underperform, but sometimes it backfires. I lost 20 pounds in my mid-30s and I've kept it off into my 40s. But before I figured it out, I was literally doing every single one of these things I'm about to tell you to stop doing. I was following the advice to a T and constantly fighting an uphill battle with my weight. Once you know what to do specifically for your body, your efforts start significantly paying off. The changes show up. You see it and you feel it in your body. That's what I want for you. So, seven pieces of advice to stop doing, seven swaps, let's get into it. The first one is cardio. And I want to be so clear that I am not anti-cardio. I actually love cardio. Walking, cycling, getting your heart rate up, all important for your health, not the problem. The problem is when cardio becomes your entire strategy. When it's a thing that you're doing every single day to burn calories and lose weight. That may have worked in your 20s, but it doesn't work the same way now. And here's why. When a lot of steady state cardio is your primary workout, especially if you're in a calorie deficit, your body goes looking for fuel. And after 40, when muscle mass is already under hormonal pressure, it goes after muscle first. So you're essentially burning your own metabolism down. And it gets worse because more cardio means more physical stress, which means more cortisol. And that's the hormone that tells your body to hold on to fat. So you're essentially working harder and getting less in return. To fix this, you need to make strength training your primary strategy and let cardio be the supplement. Two to three days of lifting, and I mean actually lifting, not just picking up five-pound dumbbells with cardio filling in around it. It's the same investment in workouts, but completely different return on your time, energy, and efforts. The cardio piece makes a lot of sense once you see it. This next one, number two, is trickier because on the surface, it sounds like basic math. Eat less to lose weight. Calories in, calories out, right? We know that's the weight loss equation. Except here's where it breaks down for us. Think about your metabolism like a salary. Your maintenance calories, which are what your body needs to just function, that's your weekly paycheck. A small calorie deficit to lose weight, that's your savings. It's smart, it's sustainable, and it works. But what most women actually do is slash calories significantly. They think more is better. So they go from a full day of eating straight to eating almost nothing. And your body's response to that is panic. It slows everything down to protect itself, and your metabolism shrinks to match what you're giving it. So now you've got a smaller paycheck and you're still trying to save. The math falls apart. And after 40, we have less metabolic buffer than we did in our 20s. You cannot out-restrict your biology. Your biology will always win. The solution here is not eating less. It's eating the right thing for what our body needs. Before you cut anything, before you cut one calorie from your diet, try anchoring your day with enough protein to protect your muscle. 0.7 to one gram of protein per pound of body weight is what's recommended for women our age. And let this be the foundation. Once that's locked in, once you've been doing that consistently, then adjust your calorie deficit. But build the floor before you cut the ceiling. So you've got the calorie piece down. Now let's talk about the plan you're following because this one feels harmless, but it's not always. Number three is to just eat clean. Whole foods, nothing processed. What could go wrong? Two things actually. First, most clean eating plans were designed for the general population. They don't account for what's happening in our bodies specifically right now, like hormonal shifts and the changes in how we process and store nutrients. So you're following a plan that's built again for somebody else's biology. And second, clean eating is almost always all or nothing. You're either on a clean eating plan or you fell off. And the second that life happens, you want to go out to a nice dinner, you have a stressful week at work, or you are on vacation, then the whole thing collapses and you're starting over again. Here's a better, more effective model. You have roughly 21 meals in a week if you eat three meals a day. What if 17 of them were healthy, intentional, protein-anchored? And what if four had a built-in flexibility? That's 17 healthy meals on plan and four flexible meals for you to enjoy the foods that you love. That's an intentional and effective system. It's one that accounts for being a real human being with a real life. And any system that you can sustain will always be a perfect plan that you can. Okay, this next one I know hits close to home for me personally. And I think for most women who grew up in the 90s. Number four is the idea that you need to earn your food. That if you didn't work out, you should eat less, or that a bad food day needs to be punished with a harder workout tomorrow. And here's why that doesn't work, not just emotionally, but mathematically. A 400-calorie meal like a bowl of pasta or a burger or some chips and a glass of wine takes roughly 45 to 60 minutes of running to burn off. Not walking, not a spin class, but actual running. And then assuming you will run, after that run, your body is hungrier, it's more tired, and you're more likely to overeat at your next meal. So you don't come out ahead. You just literally end up in this never-ending and exhausting cycle. Trying to out-exercise your food is not a strategy. The numbers will never work in your favor. So here's what I suggest: move your body because it makes you stronger. Fuel your body because it deserves it. And on the days when your meals aren't perfect, a C will always be better than an F. Number five is to watch the scale, because this one quietly derails a lot of women who are actually doing so many things right and effectively. The scale is one data point, but it's arguably the noisiest and most misleading one that you have access to. It fluctuates with water, sodium, hormones, where you are in your cycle, whether you've been in the bathroom yet. It can literally swing three to five pounds in a single day and have absolutely nothing to do with fat or your progress. And here's the problem: when that's the only number that you're watching, a week of real progress can look and feel like failure. And for women over 40 who are building muscle and losing fat simultaneously, which is absolutely possible, that number on the scale can actually go up as your body composition improves. The scale will lie to you, always, repeatedly. Track this instead. How do your clothes fit? Are you feeling stronger and lifting more than four weeks ago? How's your energy? How's your sleep? How do you feel walking up a flight of stairs? These are not soft metrics. They're real data that tells you far more about your body transformation than a number on a scale ever could. So swap the scale as your primary measure and try this for 30 days. It's gonna help you stop chasing a number and instead focusing on building a body that you actually want and love. And next, here's where your body transformation either happens or doesn't. Number six is just move your body, that something is better than nothing. And broadly, yes. But for women over 40 who are trying to actually change their body composition, just move your body becomes permission for randomness. You do a spin class on Monday, you go for a walk on Tuesday, do a yoga video on Wednesday, a random ab workout on Thursday. All movement and great, but zero strategy. Random doesn't build anything. It keeps you busy, sure. And it might burn some calories on a good day or a good week, but it never creates the progressive overload that your muscles need to grow and strengthen and change your body composition, which after 40 is a whole game. Think about it this way: if you showed up to work every day and just did whatever felt right, you send some emails, you do a little organizing, maybe some data entry. You might feel productive at the end of the day, but nothing ever got accomplished. Your body works the same way. Intentional training means you have a plan. You know which days you're lifting, which muscle groups you're working, and you're tracking whether you're progressing with more weight, more reps, better form, week over week. That is the difference between moving your body and building your body. Okay, last one, consistency is key. Genuinely actually true. But here's the part that nobody finishes that sentence with consistency in the wrong things is still wrong. It's just a faster route to the wrong destination. If you've been consistently doing hours of cardio a week, consistently eating in a big calorie deficit, consistently sleeping less than seven hours a night, and consistently not seeing results, well, you've been incredibly consistent and it hasn't helped. Consistency only works when it's pointed at the right behaviors. And that's what everything we've covered today comes down to. If you're going to show up, and if you're listening to this podcast, I know you will, you deserve to be showing up for the right things. Consistent protein anchor, consistent strength training, consistent 17 healthy meals a week and four flexible meals a week, consistent metrics that actually tell you the truth about your progress and your body composition. That's the consistency that compounds. The goal is not to do more and to try harder. It's to try smarter. And now you know the difference. Okay, so that was a lot. Seven tips, seven swaps. Let's recap them fast. Number one, stop doing cardio as your strategy and start lifting and using cardio as a supplement. Number two, stop slashing calories. Anchor your diet with protein first and then adjust your calorie deficit. Number three, stop following generic nutrition plans. Build your week around 17 healthy on-plan meals and four flexible meals. Number four, stop trying to out-exercise your food. The math will never work. Exercise to build strength and not to burn off a meal. Number five, stop living by the scale. Track how you feel, how your clothes fit, and how you're performing. Number six, stop doing random movement. Start training with intention and with a plan that you can progress. And number seven, stop being consistent with the wrong things. Lock in your right behaviors and let that compound. If you're listening to this thinking, okay, I want to turn this into a real structure I can start following this week. I made something exactly for that moment. It's a free quiz called What's My Metabolism Type? And it will take everything we've just covered and make it personal to you. It tells you the state of your metabolism right now, what's specifically been keeping you from lose weight, and it gives you customized next steps. So you don't just leave this episode with good information, but you leave with a plan that's yours and it's gonna help you make progress. The link for the quiz is in the description below. And if you want more direction and structure and to learn how to lose weight in your 40s and 50s and finally keep it off, which is the key, go back and listen to my free four-part permanent fat loss masterclass. It's episodes 50 to 53, and it's gonna provide you so much information and direction and structure around how to lose weight and keep it off. I will link those episodes also in the description below. And finally, I would love for you to become part of the behind the body community by joining our weekly newsletter where I talk about all things health, fitness, diet, nutrition, wellness, and lifestyle for us women in our 40s and 50s. Join the newsletter at behind thebody.com forward slash newsletter, and the link for that will also be in the description below. Thank you so much, my friend, for tuning in. And I cannot wait to chat with you next Monday. Have a great week.