Women's Energy: Hormones, Strength, and Feeling Like Yourself Again

dr stacy sims episode health and lifestyle hormones mental fitness perimenopause strength training women's health Jan 05, 2026

Episode 13 · 5 January 2026 · 62 min

With Layne Beachley AO & Tess Brouwer, featuring Dr Stacy Sims

 
Listen on Spotify Watch on YouTube Listen on Apple Podcasts Listen on Amazon Music

About this episode

How do you stop fighting your body and start working with it? In this powerful and practical episode, Tess and Layne welcome world-leading exercise physiologist and nutrition scientist Dr Stacy Sims into the studio to unpack the science women were never taught about their own bodies. Layne shares the real experience so many women quietly go through β€” feeling flat, foggy, tired and not quite like herself, while still trying to keep life moving. Tess opens up about what it is like to watch someone you love struggle and not know what to do, until the right information finally lands and everything starts to make sense.

Dr Sims breaks down the most important truth in women's health science: women are not small men. She explains how female physiology responds differently to stress, training, fuelling, sleep disruption and hormonal change, and why so many popular wellness trends can backfire for women, especially in perimenopause and menopause. Together they translate the science into everyday language, with tools you can actually use β€” how to build energy without burning out, how to train for strength not depletion, and how to fuel in a way that supports your hormones, brain and long-term health.

Powered by AIA

Calculate your AIA Vitality Age in less than 5 minutes, and get a better understanding of your health.

AIA Age Calculator

Key takeaways

  1. Women are not small men, and your body is not failing. Much of mainstream health advice was built on male physiology. When women follow those rules and feel worse, it is not a lack of discipline β€” it is a strategy that does not match their biology.
  2. Under-fuelling is one of the fastest ways to crash your energy. Skipping meals, restricting carbs or 'being good' with food can be read by the body as stress, showing up as fatigue, brain fog, disrupted sleep, cravings, mood swings and a stalled metabolism.
  3. The goal is strength and stability, not punishment. This episode reframes exercise from burning calories to building capacity. Strength training is a hormone-supportive tool for women β€” especially through perimenopause and menopause β€” protecting muscle, bone, metabolism and confidence.
  4. The wrong kind of intensity can work against women. Dr Sims explains the difference between constant high-intensity sessions and true sprint-interval training. More intensity is not always better; the right intensity, done the right way, protects hormones and improves results.
  5. Perimenopause and menopause are not the beginning of decline. With the right education this stage can be a powerful upgrade. By adjusting training, fuelling and recovery to match the body you live in now, you can feel stronger, clearer and more energised.

 

Chapters

Tap any clip to jump the player above to that moment.

 

Transcript

Auto-generated, may contain minor errors. Expand a section, or tap “Play this clip” to jump the player to it.

00:00Introduction

Layne Beachley & Tess Brouwer (00:00):

Episode 13 The Science of Women’s Energy, Hormones, and Feeling Like Yourself Again https://www.youtube.com/watch?v=-9aI8dmdOlw\&t=1s You're tuning into a wakeup call, which is your weekly dose of purpose packed with sciencebacked tools to beat burnout and boost happiness. Hosted by us, Tess Brower and seventime world champion Lane Beley. We're the founders of Awake Academy. \[music\] This podcast mixes raw life...

05:54How Stacy found herself again

Dr Stacy Sims (05:54):

changed my life. I want to go back to the data of it before I start explaining how you've changed my life \[laughter\] and first ask you how you got into this style of changing women's lives. Changing women's lives. Yeah. What what what was the driver? Um it's all selfish. I say that kind of tongue and cheek, but...

11:17Getting the data the world was missing

Dr Stacy Sims (11:17):

What were the data points that woke you up that made you become more vibrant and healthy and get your period back and all of those incredible things that a woman is capable of? What were those data points and what were those tools? Um I think being a like a a participant in all my own thought processes. So...

13:14Heat therapy and what it does for women

Dr Stacy Sims (13:14):

isn't appropriate if you're already active. So, I started going down the rabbit holes and one of the rabbit holes is my favorite thermore regulation. So, I was sitting in the nail salon with my tablet pretending to be like one of the other moms, but really I'm geeking out. And I'm like, "Oo, look at estradile, heat shock proteins,...

16:52Infrared versus a real sauna

Dr Stacy Sims (16:52):

of slack about that. I can imagine data is the data. So, can we just briefly touch on the difference between the infrared sauna and the regular sauna? Because ever since I met you, I'm done with the infrareds. I'm just going straight sauners. I'm over the infrared sauners. Yeah. So, I mean, infrared is more comfortable because it actually...

21:05Why women should stop fasting

Dr Stacy Sims (21:05):

through them and Dr. Stacy, I'd love you to talk about the science behind it. Um, as we explore these. So, number one, number one, intermittent fasting. You stopped fasting. Thank you. I'm so happy when you told me that I was like, "Oh, yay. Me, too." \[laughter\] Um, so when we look at the data for women, yes, we...

27:46Belly fat, body obsession and Ozempic

Dr Stacy Sims (27:46):

the um questions I had for you was why are we so obsessed with our bodies looking the perfect way when there's like cultures out there who survived for thousands of years that like having a healthy amount of belly fat is survival and is actually better for childbearing. And in all of your studies, I'm like, how what have...

30:32Protein, creatine and adaptogens

Dr Stacy Sims (30:32):

there one \[laughter\] day. So, so you tapped on number two was protein, right? Number two was protein. Yes. So, encouraging me to eat protein before I train and then and so let's talk a little bit about nutrition then. So, the protein before I train, but then also the introduction of creatine and chisandra just miracle. What is Cassandra?...

36:33Strength training to keep your power

Dr Stacy Sims (36:33):

Yeah. So yeah, let's just talk a little bit about the importance of weight training and then what women can do to get rid of that weight, that fat band. Um, and then and and then I'll ask you one more question about the the duration of the intensities because you told me 30 seconds and something on the Instagram...

44:51Sprint intervals that melt visceral fat

Dr Stacy Sims (44:51):

you know, like and that's the that's the ultimate goal and that's Yeah, just we just got to quickly tap on high interval training because uh that's that's really helped with me eliminate you. You told me to do five times 30 second intervals once a week and I've I've started doing 150 m soft sand sprints that takes me...

49:11Listener questions on energy and sleep

Dr Stacy Sims (49:11):

okay. So, the first one comes from Sarah, and she has been like she um since doing the collective, she's become sober for a year, lost 35 kilos, and just is showing up as her most vibrant self. And she says, "If a 48-year-old woman is strength training, trying to build muscle while keeping high energy, what is one unconventional...

52:46How to support her through menopause

Dr Stacy Sims (52:46):

No, she already is. Okay, this one comes from Dan and he has said, "How can I support my wife through menopause? I know she's struggling and I just don't know what to do." So, having I'm glad that a guy is asking this question. Like, have conversation with your wife. Like, have her say, you know, I'm really struggling....

55:06Facing perimenopause without fear

Dr Stacy Sims (55:06):

Stacy. The last question comes from me. Mhm. I have a fear now of per menopause. I'm turning 40 in February. Um I feel like the world has woken up to the conversations around permenopause and menopause which is incredible. like it is it is like the fact that we haven't nurtured women through this stage of life for so...

59:53Five minutes for yourself: best-life advice

Dr Stacy Sims (59:53):

So, to close out, this episode is um part of our new year, better you, and we are equipping people to be their best selves and live their best lives. Whether you're going through a really hard time or you're thriving in life, what is your advice to someone kicking off the new year, what what is your advice for...

Frequently asked questions

Who is Dr Stacy Sims?

A world-leading exercise physiologist and nutrition scientist specialising in female-specific physiology, training and fuelling. She is the researcher and author behind the message that 'women are not small men' and books including ROAR and Next Level.

What does 'women are not small men' mean?

Female physiology responds differently to stress, training, fuelling, sleep disruption and hormonal change. Advice built on male bodies β€” like aggressive fasting or constant high intensity β€” can backfire for women, so the strategy needs to match female biology.

Why is under-fuelling a problem for women?

When you skip meals, restrict carbs or under-eat, the body can interpret it as stress. That can drive fatigue, brain fog, disrupted sleep, cravings, mood swings and a stalled metabolism β€” the opposite of the result most women are chasing.

Should women fast or skip breakfast?

Dr Sims cautions that fasting and skipping breakfast can disrupt women's physiology, especially as hormones shift through perimenopause and menopause. Fuelling around training and across the day tends to support energy, hormones and recovery far better.

What's the difference between sprint interval training and HIIT?

Sprint interval training uses very short, true all-out efforts with full recovery, while typical HIIT keeps intensity high for longer with limited rest. For many women the sprint style is more hormone-supportive and effective than relentless high intensity.

Which supplements does Dr Sims discuss?

She covers practical supports including adequate protein, creatine and magnesium, alongside smart fuelling habits β€” tools that can help energy, strength, recovery and long-term health when matched to a woman's needs.

Guest

SS

Dr Stacy Sims

Exercise physiologist & nutrition scientist β€” leading researcher on female-specific physiology, training and fuelling; author of ROAR and Next Level

Women are not small men β€” train, fuel and recover for the body you actually have.

Join 12,000 Readers

Own Your Week Email Broadcast

The biggest moments, practical tools and real-life takeaways from each episode, plus the latest from Awake Academy, delivered in one powerful weekly email.