The Science of Exercise for Women 40+: What to Prioritise (And What to Ignore) | Dr Lauren Colenso-Semple and Dr Alyssa Olenick

Mar 2, 2026

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Dr Lauren Colenso-Semple and Dr Alyssa Olenick join me to answer a question I hear constantly from women in midlife: “Why am I putting in so much effort, but not seeing the results?” We break down what matters most for strength, body composition, and long term health, and what is simply noise.

You’ll come away with a clear framework for resistance training, a realistic view of cardio, and a calmer approach to progress that does not rely on fear, perfection, or menopause specific gimmicks.

What We Cover

Why effort and the right stimulus matter more than “working hard”
A simple full body lifting template for busy weeks
How to know if you are training close enough to failure
Why cardio is still important, and how to think about intensity
The cortisol and overtraining myths that keep women stuck
How protein, consistency, and dieting patterns affect results

If you want a plan you can actually stick with, this one will help you focus on the basics that move the needle.

Intro (00:00)
The Real Reason Your Fitness Progress Has Stalled (02:00)
Why Women Should Lift Heavy (10:40)
Maximize Your Training ROI ( 21:29)
Fitness Fact vs. Fiction (34:17)
How Your Body Changes with Age (40:59)
The Busy Woman’s Guide (53:30)
Why Reps & Rest Matter ( 1:11:54)
Which Goal Should You Prioritize in Midlife? ( 1:29:52)
Eating for Muscle Growth (1:44:43)
Building Muscle While Losing Fat (1:54:36)
Finding Workouts You Love (2:09:13)
HIIT, Zone 2, and What Your Heart Really Needs (2:14:58)
Balancing Cardio Intensities (2:25:14)
Signs Your Cardiovascular Training is Actually Working (2:30:25)
Midlife Fitness Truths (2:38:02)
Final Takeaways: Strategies for Longevity (2:47:29)

Connect with Dr Lauren Colenso-Semple on Instagram and at drlaurencs.com. Follow Dr Alyssa Olenick on Instagram, listen to The Messy Middle Podcast, subscribe on YouTube, and visit doclyssfitness.com for practical, science based guidance on training and midlife health.

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Simon Hill, MSc, BSc (Hons)

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