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The Workout Mistake Women Make with Dr. Stacy Sims

With the right approach, women can revolutionize how they approach fitness during their later stages of life, ensuring they stay strong and vibrant for years to come

Do you know the crucial differences in how women and men should approach fitness and aging? This week, women’s health expert Dr. Stacy Sims breaks down the impact of hormonal changes, explaining why women 40+ need to shift their workout routines to see real results. The keys here are high-intensity training and strength-building for women’s long-term health. Dr. Sims explains how to tailor exercises to avoid common mistakes and shares practical strategies to optimize your fitness, no matter your age or stage in life.

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Key Quotes

“Women don’t age in a linear fashion like men do. Hormonal changes hit much earlier and more dramatically.”

“For women over 40, lifting heavy isn’t optional—it’s essential for maintaining lean mass and bone density.”

“Women are already metabolically flexible. High-intensity is where the real gains are.”


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How Women Should Train Differently: Insights from Dr. Stacy Sims

Understanding how women’s bodies age is a critical step toward building more effective fitness routines. In a recent episode of SuperAge, Dr. Stacy Sims, a leading expert in women’s health and exercise physiology, explains why women need a different approach to fitness, especially as they reach their 40s and beyond. Her key insight? Women are not small men—and their workout plans should reflect that.

The Role of Hormones

From puberty to menopause, hormonal changes have a profound impact on how women gain muscle, lose fat, and recover from exercise. For starters, Dr. Sims stresses that perimenopause is a particularly pivotal time, as many women experience significant changes in muscle mass, bone density, and metabolism. While men’s bodies age in a more predictable, linear fashion, women undergo a sharp physiological shift during perimenopause that requires more tailored fitness strategies.

Why Heavy Lifting is Critical

According to Dr. Sims, women over 40 must shift from low-weight, high-rep routines to power-based strength training. Lifting heavy with low repetitions builds lean muscle, improves bone density, and helps offset the decline in strength that comes with age. “If you’re still using those pink dumbbells, it’s time to rethink your strategy,” Dr. Sims says.

High-Intensity Workouts for Women

Many fitness enthusiasts tout the benefits of Zone 2 training for improving fat metabolism, but Dr. Sims says women need to focus more on high-intensity intervals. Women are already metabolically flexible. With this in mind, high-intensity interval training (HIIT) and sprint interval training are far more effective for maintaining muscle quality, especially during perimenopause.

The Takeaway

Dr. Stacy Sims’ message is clear: To age healthfully, women must train differently from men. With the right approach—heavy lifting, intense intervals, and smarter recovery—women can optimize their strength, health, and longevity as they age.

By applying these insights, women can revolutionize how they approach fitness during their later stages of life, ensuring they stay strong and vibrant for years to come.

See medical disclaimer below. ↓

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The ideas expressed here are solely the opinions of the author and are not researched or verified by AGEIST LLC, or anyone associated with AGEIST LLC. This material should not be construed as medical advice or recommendation, it is for informational use only. We encourage all readers to discuss with your qualified practitioners the relevance of the application of any of these ideas to your life. The recommendations contained herein are not intended to diagnose, treat, cure or prevent any disease. You should always consult your physician or other qualified health provider before starting any new treatment or stopping any treatment that has been prescribed for you by your physician or other qualified health provider. Please call your doctor or 911 immediately if you think you may have a medical or psychiatric emergency.

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