The Body Reset: How Women Should Eat & Exercise for Health, Fat Loss, & Energy | Dr. Stacy Sims

The Body Reset: How Women Should Eat & Exercise for Health, Fat Loss, & Energy | Dr. Stacy Sims

The Mel Robbins PodcastMar 27, 20251h 35m

Mel Robbins (host), Dr. Stacy Sims (guest)

Why “women are not small men” in health, training, and researchFasted training, intermittent fasting, and morning nutrition for womenStrength training, muscle loss with age, and how women should liftHigh-intensity sprint intervals vs. long cardio for health and fat lossCold plunges vs. sauna: sex differences in heat and cold adaptationCreatine, protein intake, and practical nutrition for busy womenExercise as stress resilience and a path to body positivity and empowerment

In this episode of The Mel Robbins Podcast, featuring Mel Robbins and Dr. Stacy Sims, The Body Reset: How Women Should Eat & Exercise for Health, Fat Loss, & Energy | Dr. Stacy Sims explores stop Training Like A Man: Dr. Stacy Sims’ Female Fitness Reset Mel Robbins interviews Dr. Stacy Sims, an exercise physiologist and women’s health researcher, about why most popular fitness and nutrition advice fails women. Sims explains her core principle, “women are not small men,” and details how female physiology, hormones, and muscle composition require different strategies from male-centered ‘bro science.’

Stop Training Like A Man: Dr. Stacy Sims’ Female Fitness Reset

Mel Robbins interviews Dr. Stacy Sims, an exercise physiologist and women’s health researcher, about why most popular fitness and nutrition advice fails women. Sims explains her core principle, “women are not small men,” and details how female physiology, hormones, and muscle composition require different strategies from male-centered ‘bro science.’

They dismantle common practices like fasted morning workouts and late-start intermittent fasting, showing how these actually increase stress, reduce muscle, and promote fat gain in women. Instead, Sims outlines a practical approach centered on eating earlier, prioritizing protein, lifting heavier weights with fewer reps, and using short sprint intervals for cardiovascular and metabolic health.

The conversation also covers cold plunges vs. sauna for women, the mental health benefits of movement as stress resilience training, creatine supplementation, and how to build a sustainable, empowering exercise lifestyle rather than chasing thinness.

Key Takeaways

Ditch fasted morning workouts; women need to eat before they move.

Women’s brains (especially the hypothalamus) are highly sensitive to low blood sugar after waking. ...

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Front-load your day with protein, especially in the morning.

Around 30 grams of protein soon after waking stabilizes cortisol, kick-starts metabolism, supports muscle maintenance, and improves sleep later by reducing nighttime blood-sugar crashes. ...

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Shift from light, high-rep lifting to heavier, low-rep strength training after your mid-30s.

As estrogen and progesterone decline, women respond less to 10–12 rep, light-weight ‘toning’ style workouts. ...

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Use short sprint intervals instead of endless cardio to boost heart health and fat loss.

Women benefit from very short, all-out efforts (up to 30 seconds) followed by 1. ...

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Intermittent fasting as popularly practiced usually backfires for women.

Holding a fast until noon while drinking only coffee keeps cortisol high, promotes muscle loss, encourages fat storage, and can harm bone and metabolic health. ...

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Women get more benefit from moderate cold and especially from heat (sauna) than ice baths.

Ice-cold plunges often over-stress women’s systems: they cause extreme vasoconstriction without the beneficial shivering and metabolic adaptations seen in men. ...

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Exercise is not just about aesthetics; it’s stress-resilience training for your brain and life.

Sims reframes movement as deliberate, positive stress that teaches the body and brain how to handle all forms of stress. ...

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Notable Quotes

“Women are not small men.”

Dr. Stacy Sims

“If you get up and start your exercise without any food, the hypothalamus is like, ‘Wait a second, this is a stress to the body that I need to really try to figure out.’”

Dr. Stacy Sims

“On the outside, that drive to be super thin is killing us on the inside.”

Dr. Stacy Sims

“Exercise is an incredible positive stress on the body that creates changes from central nervous system down to the smallest little thing in your cell.”

Dr Stacy Sims

“I want every woman to know that they have a right in every place, in every gym, every situation to be strong, empowered, and feel positive about the space that they’re in.”

Dr. Stacy Sims

Questions Answered in This Episode

If I’ve spent years doing fasted cardio and light weights, what are the first 2–3 changes I should make this month to start reversing the damage without overwhelming myself?

Mel Robbins interviews Dr. ...

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How can women accurately tell whether they’re eating “enough” to build muscle and support hormones without gaining unwanted fat, especially if they’ve been chronically undereating?

They dismantle common practices like fasted morning workouts and late-start intermittent fasting, showing how these actually increase stress, reduce muscle, and promote fat gain in women. ...

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What would a simple, week-long starter plan look like for a woman in her 40s who wants to add heavier lifting and sprint intervals but has never used a barbell?

The conversation also covers cold plunges vs. ...

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How should women adjust cold plunge and sauna use across the menstrual cycle, perimenopause, and post-menopause to maximize benefits and minimize stress?

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Beyond creatine and protein, are there other evidence-based supplements or lab markers Sims recommends women track to support long-term brain, bone, and metabolic health?

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Transcript Preview

Mel Robbins

(instrumental music plays) It often has felt like, to me, as I've learned more and more, like, oh my God, wait a minute, we've just kinda treated women and our health almost like if you're golfing. There's the tee that's further back for the guys, and there's the tee that's a little bit, like, closer for the women, and we're just gonna treat everybody the same but shrink it a little bit.

Dr. Stacy Sims

Well, take running shoes-

Mel Robbins

Yeah.

Dr. Stacy Sims

... or a bicycle. All they do is they make it a little bit smaller, maybe put some pink on it and say it's a woman's product. (screen swooshes) We experience things differently as women than men do, but that's not ever really explained. When we look at the trends of the fasted training, don't eat before, it's all on male data. If you look at most women who make a point to get up, do some training, go exercise, and after four weeks of following the same kinda training program as their male partner, their male partner has gotten leaner, fitter, better focus, all of the things that you want outta fitness. And the woman's like, "How come I'm fatter and tired?" (screen swooshes) We have gotten into a societal idea that we all live in the same kind of temperature. We have automatic garage door openers. We are, have created this environment where we don't move, and if we're talking about, "How do we just make one small change to improve our mental health?" that's exercise. (clock ticks)

Mel Robbins

Hey, it's your friend Mel. Welcome to the Mel Robbins Podcast. I am absolutely thrilled that you're here. I am on such a... I don't even know what to say it. I feel so excited about what we're talking about today. It is gonna be liberating. It is such an honor to spend time with you, to be together with you, but especially when we're gonna have a conversation that is gonna light you on fire and make you feel both mad and empowered. Let's fricking go. And if you're a new listener, I wanna take a moment and just welcome you. Welcome to the Mel Robbins Podcast family. And boy, have you picked a winner of a conversation to listen to. Because you made the time to listen to this particular episode, here's what I already know about you. You're the type of person who values your health. You want the facts. You want the science. You want results, and that's what you deserve. And if someone sent this to you, that's really cool because they care about you, and they want you to have the science and the facts and the correct information so that you can take better care of yourself too. I cannot wait for you and I to learn from Dr. Staci Sims today. Now, Dr. Sims is a globally recognized expert in women's health, exercise physiology, and nutrition science. She has a PhD in exercise physiology and nutrition science. She's on the faculty at Stanford, teaching about lifestyle medicine, and at Auckland University of Technology, teaching sports medicine. She is a renowned researcher and has directed research programs at Stanford, Auckland University of Technology, and the University of Waikato, and she has published, check this out, 107 peer-reviewed research papers, which in normal-person speak is a ton. Her research has revolutionized how women, mm-hmm, women approach fitness, especially during menopause and hormone changes. She's the author of two groundbreaking books, Roar and The Next Level. She also has a daughter and, just like me, is in her mid-50s, juggling a big career, a marriage, motherhood, and hormone changes. She has so much to teach you today, and we are gonna go straight for the bro science. We are going to tell you the mistakes and the lies that you've been told. We're gonna tell you the truth based on the research about what works for women and what doesn't. We're gonna teach you why the things that you've been doing have been backfiring. It's because you have been exercising like a dude, and it is time for you to exercise like a woman. I am so fired up for you to be here. I am fired up to learn with you, and I am fired up for all of the women and the young women in your life that you're gonna share this with. So please help me welcome Dr. Staci Sims to the Mel Robbins Podcast. Dr. Staci Sims, I am so thrilled that you're here in our Boston studios. I have been waiting a long time to be able to sit down, meet you, and learn from you. I'm s- just thrilled that you're here.

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