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If you've done every arm workout out there and the back of your arms still hasn't changed, Nikkiey Stott explains why. After 40 we lose muscle faster, skin elasticity changes and fat redistributes, with a lot of it settling at the back of the arm. High-rep, low-weight arm routines don't build enough muscle to change that shape.
Nikkiey walks you through the only two exercises she says you need. First, a triceps movement done slowly and with control, because the triceps is where batwings live. Second, a shoulder and upper-back movement like a shoulder press, lateral raise or row, which frames the arm, improves posture and changes how your arms hang.
She also clears up the myths that hold women back: toning comes from building muscle and losing body fat, you won't get bulky, you don't need to train arms every day, and you're not too old to start. Two to three workouts a week, done consistently with the right moves, is enough.
Key takeaways
- After 40 you lose muscle faster, skin elasticity changes and fat tends to settle at the back of the arm, so high-rep, low-weight arm work won't change the shape.
- Focus on building muscle in three areas: the triceps, the shoulders and the upper back.
- For exercise one, pick a triceps movement that feels best on your joints, such as a triceps dip, overhead triceps extension or triceps kickback.
- Use a weight that's challenging but controllable, go slow on the way down, squeeze at the bottom, press back up with control and never swing or rush.
- For exercise two, choose a shoulder press, lateral raise or row, keep it slow and squeeze your shoulder blades together at the top.
- Train arms one to two times a week with real intensity rather than doing light arm work every day, because muscles grow when they recover.
- Two to three workouts a week is enough, and light weights are fine to start as long as you progress over time.
Questions answered
What causes batwings after 40?
Nikkiey explains that after 40 women lose muscle faster than in their 20s and 30s, skin elasticity changes so less muscle underneath means more sagging, and fat redistributes with a lot of it settling at the back of the arm.
What is the best exercise for batwings?
A triceps exercise, because the triceps is the muscle responsible for the batwing look. Choose a triceps dip, overhead triceps extension or kickback, use a challenging weight, lower slowly, squeeze and press back up with control.
Why should I train my shoulders to tone the back of my arms?
A stronger, more defined shoulder makes the underarm area look tighter and leaner, and training the shoulders and upper back improves posture so your arms don't hang in a way that looks softer or heavier. It also helps protect your joints.
How often should I train my arms to get rid of batwings?
Nikkiey recommends working your arms one to two times a week with real intensity instead of light arm work every day, since muscles grow when they recover. Two to three workouts a week overall is enough.
Will lifting weights give me bulky arms?
No. Nikkiey says women don't have the testosterone levels to accidentally build huge muscles, so what you'll get is firm, defined arms.
Am I too old to tone my arms?
No. Nikkiey says you can build muscle at any age, and the only thing that stops you is believing it's too late.
Ask Nikkiey
Questions this video helps answer, with what Nikkiey says across everything WarriorBabe teaches.

How to Get Toned
Will lifting weights give me bulky arms?
No. Nikkiey explains that women don't have the testosterone levels to accidentally build huge muscles, and after 40, declining testosterone makes building muscle harder, not easier. What lifting gives you is firm, defined arms. Muscle creates tone, not size, and arms that get no training tend to lose shape and look soft.
Read the answer →

How to Get Toned
How do I get rid of bat wings after 40?
Bat wings shrink when you lose body fat and build real triceps and shoulder muscle, not when you add more light arm exercises. Nikkiey explains that bat wings combine excess upper-arm fat, lost triceps muscle and reduced skin elasticity. Nutrition comes first, then challenging strength training reveals and shapes the arm.
Read the answer →

How to Get Toned
How often should women over 40 train arms?
Nikkiey recommends training arms two to three times a week as part of a full body or upper body split, with no separate arm day needed. Elsewhere she frames it as one to two focused arm sessions with real intensity. Either way, daily light arm work is out. Muscles grow when they recover.
Read the answer →
Full transcript
Nikkiey: You've probably tried every arm workout on YouTube, but nothing seems to work. That stubborn underarm flab is still there no matter how hard you've tried. And this is the point where most women start to believe it's impossible to get rid of. But I've helped thousands of women over 40 tighten and tone their arms, and here's what I can tell you with confidence: you don't need more workouts. You just need the right two. So stick with me as I walk through this video, show you both exercises step by step, explain exactly how they work after 40, and show you the fastest way to finally get rid of those stubborn batwings.
Now, the reason your arms aren't changing no matter what you've tried is because the way your body works is completely different today. Before, you could skip a few workouts, eat a little cleaner for a week, and have slim arms without thinking twice. But today, it feels like you're stuck with a body you don't recognize, and no matter what you do, nothing seems to work.
That's because after 40, we lose muscle faster than we did in our 20s and our 30s. Our skin elasticity changes, meaning the less muscle you have underneath, the more everything sags. And here's the part nobody tells you: fat actually redistributes as we age, and a lot of it settles in the back of our arm. So if you're doing high-rep, low-weight arm workouts, you're not building the muscle needed to actually change the shape of your arms. You're just going through the motions.
The real solution is to focus on building muscle in three key areas: the triceps, which is the back of your arm, where the batwings live; the shoulders, which frame the arm and improve how everything looks; and the upper back, which affects your posture and how your arms hang. When you build muscle in these areas with the right exercises and the right form, your arm literally changes shape from the inside out.
So let me show you exactly how to do this, starting with exercise number one, which is the most important one. The first exercise is non-negotiable. If you do nothing else, do this one. I say that because it targets the exact muscle responsible for that batwing appearance, which is the triceps. Most arm exercises women do, like bicep curls, don't even touch the triceps. And even when you do triceps work, most people rush through it or use bad form, which means zero tension on the muscle, and zero tension means zero change.
So here's exactly how to do it properly, so next time you're in the gym you can add these into your routine and start building the triceps from day one. Number one, choose a triceps-focused movement that feels best on your joints: a triceps dip, an overhead triceps extension, or a triceps kickback. Number two, use a weight that's challenging but allows you to control the movement slowly. Number three, go slow on the way down. This is called the eccentric phase, and that's where the growth happens. Number four, squeeze at the bottom and press back up with control. Number five, do not swing, do not rush. And number six, feel the back of your arm working the entire time.
Now let's move into exercise number two, which is just as important, but for a completely different reason. When it comes to shrinking the look of batwings, targeting your shoulders is key. Building the shoulder muscle not only improves your posture, but also creates more visible balance. For example, a stronger, more defined shoulder makes the underarm area appear tighter and leaner.
And your arm doesn't exist in isolation. It's connected to your shoulder and upper back, so it can't move the way it should if they aren't moving the way they should. If your shoulders are rounded forward and your posture is off, your arms will naturally hang in a way that makes them look softer or heavier. Even if your triceps are strong, your posture can still make your arms look worse. Training your shoulders correctly helps fix this and sets the foundation for more toned arms. But don't rush into the wrong movements.
Number one, choose a pressing or pulling movement that targets your shoulders and upper back, like a shoulder press, a lateral raise, or a row. Number two, keep the movement slow and controlled. Number three, focus on squeezing your shoulder blades together at the top of the movement. Number four, this builds the muscles that pull your shoulders back and properly frame your arms. Number five, over time, you'll notice your arms looking better and improving.
On top of making your arms more defined, when you strengthen your shoulders and upper back, you also protect your joints, which means less pain, fewer injuries, and workouts that you can actually stick with long term.
Now, here's the thing. These two exercises work, but they're just part of the equation, because not everybody responds the same way after 40. Some women need to focus more on building muscle, others need to adjust how they're eating, and some are unknowingly doing workouts that are actually working against them. So if you want to know exactly what your body needs, not a generic plan, not a one-size-fits-all approach, I built a quick quiz that tells you in less than two minutes. It'll show you whether you need more strength work, more food, or a completely different plan altogether. So make sure to click the link in the description to take the quiz and get your personalized next step.
To wrap up this video, I'm going to show you exactly how to apply these two exercises so you can start seeing results right away. But before we get into that, I want to quickly address some of the most common myths that are holding most women back.
Myth number one: I just need to tone. Toning comes from building muscle, not endless reps of the same movement. What you're actually trying to do when applying these exercises is build muscle and reduce body fat. That's how you start to get that toned look.
Myth number two: I don't want bulky arms. The truth is, you won't get bulky. It would take a lot for you to get to that point, because women don't have the same testosterone levels to accidentally build huge muscles. What you will get is firm and defined arms.
Myth number three: I need to do arms every day. This is false. Muscles grow when they recover, not when you're working them. Working your arms one to two times a week with real intensity is more effective than doing light arm work every single day.
Myth number four: I'm too old to start. This one frustrates me the most, because you can build muscle at any age. Studies prove it, and I've consistently seen it over the years with my clients. The only thing that stops you is believing it's too late.
So let's get into actually working these into your schedule, because I know it can feel overwhelming when you're trying to change your body. But here's what I want you to remember. Number one, you don't need to work out every day. Two to three times a week is enough. Number two, you don't need heavy weights to start. Light is fine as long as you're progressing over time. Number three, you don't need a complicated plan. You need consistency with the right moves. Simple, done consistently, beats complicated every single time. And just these two exercises, done with intention and control, will change your arms in no time.
So now you know the only two exercises you need to fix your batwings after 40. You know why your arms haven't been changing, and you know exactly what to do about it. But remember, knowing isn't the same as doing. So make sure to also take the quiz in the description to figure out your specific next step. And if you want to go deeper and get a full plan for your body, your goals, and your life after 40, that's what the quiz will help you unlock.
It's already guided women like Tina, who figured out how to fuel her body properly and went from 175 pounds to around 140 pounds while gaining strength, mobility and confidence again. Or Robin, who went through surgical menopause and was finally able to lean out, reduce her menopause belly, and get her energy and mental clarity back by applying the right workouts for her body. Make sure to check out that link below in the description and take two minutes to help you stop guessing.
See you in the next video.
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