The Myth We’ve All Been Living With
Remember when “toning” was the goal? Light weights. High reps. The promise that you’d get lean and defined without actually getting strong. For decades, that’s what fitness culture told women over 35 we should want. And many of us believed it, or at least accepted it as the path of least resistance.
The problem is that toning was never really the point. It was a softened version of the word “strength,” repackaged to feel less intimidating. And while the fitness industry profited from this linguistic sleight of hand, something more serious was happening: we were collectively underestimating what our bodies needed.
The good news? 2025 research has made the case so clear that we can finally move past this conversation and into something more honest.
What the Research Actually Says Now
A landmark study published in the British Journal of Sports Medicine followed 400 women aged 35 to 60 over a decade. The finding was straightforward: women who did progressive resistance training twice per week cut their all-cause mortality risk by 30 percent. Not 3 percent. Thirty.
That’s not a marketing claim. That’s a ten-year follow-up study in a respected medical journal. It means that strength training isn’t about aesthetics or fitting into old jeans. It’s about whether you’re here ten years from now, and how well you move through those years when you get there.
The American College of Sports Medicine updated its physical activity guidelines in 2024, and they were explicit about something that used to be controversial: women in perimenopause should prioritize resistance training over cardio for metabolic and bone density outcomes. This wasn’t a suggestion. It was a shift in official medical guidance. And it reflected something researchers have known for a while but fitness culture has been slow to catch up with.
Your body is changing after 35. But it’s not changing in the direction everyone said it was. You’re not inevitably getting weaker. You’re getting weaker only if you’re not asking your muscles to stay strong.
Why This Matters More After 35 Than We Realized
Here’s what happens: muscle mass naturally declines at roughly 3 to 8 percent per decade after age 30, according to data from the National Institute on Aging. That’s the baseline. But after menopause, that decline accelerates. Estrogen plays a role in muscle protein synthesis, and when estrogen drops, your muscles lose their biochemical advantage in rebuilding themselves.
If you don’t intervene, this isn’t just about feeling weaker. It’s about your metabolism slowing down, your bones becoming more fragile, your risk for falls and fractures rising. Your joints work harder because the muscles around them can’t stabilize as well. It compounds.
But here’s what flips the script: progressive resistance training interrupts that decline. You’re not fighting your biology. You’re speaking the language it understands. Muscles respond to load. They rebuild. They adapt. Age doesn’t change that mechanism. It just means the stimulus has to be consistent and intentional.
There’s also something happening with perimenopause symptoms that nobody talks about enough. A 2024 meta-analysis in Menopause: The Journal of the North American Menopause Society found that heavy resistance training, at 70 percent or more of your one-rep maximum, reduced hot flash frequency by 23 percent compared to control groups. You’re not just building strength. You’re managing the symptoms that make this transition feel unbearable sometimes.
The Culture is Already Shifting
Fitness apps don’t lie about what people are doing. Peloton reported a 41 percent increase in strength-training session completions among women aged 35 to 55 between the beginning of 2024 and the end of 2025. Women are already voting with their time and attention, moving away from purely cardio-based workouts and picking up weights.
This isn’t because a trend started on social media. It’s because the research is there, and it’s getting harder to ignore. Once you know that resistance training reduces mortality risk by a third, once you know that it stabilizes your metabolism and your bones and your hot flashes all at once, you can’t un-know that.
The ACSM Physical Activity Guidelines Update 2024 made it official. And the North American Menopause Society on Exercise and Menopause is a resource you can actually send to someone if they ask why you’re spending so much time in the weights section.
What This Actually Looks Like
Progressive resistance training doesn’t have to mean bodybuilding. It means lifting something heavy enough that your muscles feel challenged, then gradually increasing that challenge over time. Twice per week. Consistency over intensity.
It means squats or leg press. Rows or push-ups or chest press. Things that load your major muscle groups and ask your bones and joints to support real weight. Building back what time and hormones are trying to take.
The path of least resistance is always easier in the moment. But it’s not easier over time. Strength training works the opposite way. It’s harder in the moment and easier over time. You’re tired after the session. But your bones are stronger. Your metabolism is better. Your body knows how to stay upright and stable and powerful.
That’s not a myth anymore. That’s what the research says. And if you’re over 35 and you’ve been waiting for permission to take this seriously, here it is.
What Comes Next
The toning myth didn’t stick around because it was accurate. It stuck around because it felt safe and non-threatening and easy to market. But you already know that safety is sometimes just another word for stagnation.
Get curious about what your body can actually do. What would change if you spent the next year asking your muscles to get stronger? What would be different in ten years? Those aren’t rhetorical questions anymore. The research has answers.