Dr. Stacy Sims Official

@UCPD55VPa1ZWx1a_nzWC2VJA - 344K subscribers

Hi, I’m Dr. Stacy Sims! Welcome to my official YouTube channel. My vision is a world of healthy women who understand their bodies, know how to work with their unique physiology, know their periods are ergogenic aids and create positivity around being a woman in sport. Together we can shift the destructive narrative and elevate women in research, science, and sport.

Home Videos Live Playlists

The Norwegian 4x4: The VO2 Max Workout for Longevity

The Norwegian 4x4: The VO2 Max Workout for Longevity Dr. Stacy Sims Official

5.8K views - 1 day ago

What's Proven and What Isn't Yet in Women's Health Research

What's Proven and What Isn't Yet in Women's Health Research Dr. Stacy Sims Official

2.3K views - 4 days ago

Dr. Stacy Sims: What is the Rep Range for Brain Health in Women?

Dr. Stacy Sims: What is the Rep Range for Brain Health in Women? Dr. Stacy Sims Official

7.8K views - 6 days ago

Dr. Stacy Sims: Does Skipping Breakfast Ruin Your Sleep?

Dr. Stacy Sims: Does Skipping Breakfast Ruin Your Sleep? Dr. Stacy Sims Official

5.9K views - 1 week ago

Are F45 & Orange Theory Holding You Back? The Exercise Grey Zone

Are F45 & Orange Theory Holding You Back? The Exercise Grey Zone Dr. Stacy Sims Official

4.7K views - 1 week ago

Why Isn't the Belly Fat Coming Off? Women's Weight Loss & Cortisol Explained

Why Isn't the Belly Fat Coming Off? Women's Weight Loss & Cortisol Explained Dr. Stacy Sims Official

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Why Hypertrophy Training Stops Working for Women in Their 40s (Myosin Explained)

Why Hypertrophy Training Stops Working for Women in Their 40s (Myosin Explained) Dr. Stacy Sims Official

6.8K views - 2 weeks ago

5g or 10g of Creatine? What Women Need for Cognitive Health

5g or 10g of Creatine? What Women Need for Cognitive Health Dr. Stacy Sims Official

20K views - 2 weeks ago

The Real Reason You Wake Up at 3AM: Female Circadian Rhythm Explained

The Real Reason You Wake Up at 3AM: Female Circadian Rhythm Explained Dr. Stacy Sims Official

28K views - 2 weeks ago

The 1-Hour Weekly Workout for Perimenopausal Women: 20/20/20 Protocol Explained

The 1-Hour Weekly Workout for Perimenopausal Women: 20/20/20 Protocol Explained Dr. Stacy Sims Official

53K views - 3 weeks ago

Stacy Sims: The 3 Supplements Women Actually Need

Stacy Sims: The 3 Supplements Women Actually Need Dr. Stacy Sims Official

29K views - 3 weeks ago

HIIT vs Sprint Intervals: Why Women in Perimenopause Need Both (And How to Use Them)

HIIT vs Sprint Intervals: Why Women in Perimenopause Need Both (And How to Use Them) Dr. Stacy Sims Official

7.3K views - 3 weeks ago

Common Fat Loss Mistakes Most Women Make After 40 (And What to Do Instead)

Common Fat Loss Mistakes Most Women Make After 40 (And What to Do Instead) Dr. Stacy Sims Official

10K views - 4 weeks ago

What Estrogen Loss Actually Does to Women's Muscles

What Estrogen Loss Actually Does to Women's Muscles Dr. Stacy Sims Official

5.4K views - 1 month ago

What 3-5g of Creatine Daily Does for Women's Brain, Bones and Gut

What 3-5g of Creatine Daily Does for Women's Brain, Bones and Gut Dr. Stacy Sims Official

19K views - 1 month ago

Why F45 and Orange Theory Stop Working for Women in Perimenopause

Why F45 and Orange Theory Stop Working for Women in Perimenopause Dr. Stacy Sims Official

15K views - 1 month ago

Why Heavy Lifting Is Non-Negotiable for Women in Perimenopause

Why Heavy Lifting Is Non-Negotiable for Women in Perimenopause Dr. Stacy Sims Official

8.5K views - 1 month ago

What Causes Weight Gain in Perimenopause (And How to Stop It)

What Causes Weight Gain in Perimenopause (And How to Stop It) Dr. Stacy Sims Official

18K views - 1 month ago

The Science of Meal Timing in Women | Hormones, Metabolism & Performance

The Science of Meal Timing in Women | Hormones, Metabolism & Performance Dr. Stacy Sims Official

50K views - 1 month ago

How to Train Through Flat Days in Perimenopause: The Truth About Mental and Physical Capacity

How to Train Through Flat Days in Perimenopause: The Truth About Mental and Physical Capacity Dr. Stacy Sims Official

5.9K views - 1 month ago

Stacy Sims: Why Women Gain Belly Fat Even When They're Training (The Meal Timing Explanation)

Stacy Sims: Why Women Gain Belly Fat Even When They're Training (The Meal Timing Explanation) Dr. Stacy Sims Official

83K views - 1 month ago

Why Women Lose Muscle Faster in Perimenopause (And Why Heavy Lifting Changes Everything)

Why Women Lose Muscle Faster in Perimenopause (And Why Heavy Lifting Changes Everything) Dr. Stacy Sims Official

6.4K views - 1 month ago

Why Perimenopausal Women Are Losing Power (And the Lifting Protocol That Fixes It)

Why Perimenopausal Women Are Losing Power (And the Lifting Protocol That Fixes It) Dr. Stacy Sims Official

20K views - 1 month ago

Why Active Women Should Break Their Fast at Breakfast (Not Noon)

Why Active Women Should Break Their Fast at Breakfast (Not Noon) Dr. Stacy Sims Official

9.5K views - 1 month ago

What Estrogen Actually Does to Your Muscles (And Why Heavy Lifting Is the Fix for Women)

What Estrogen Actually Does to Your Muscles (And Why Heavy Lifting Is the Fix for Women) Dr. Stacy Sims Official

16K views - 1 month ago

Can Heavy Lifting Help Prevent Dementia and Alzheimer’s?

Can Heavy Lifting Help Prevent Dementia and Alzheimer’s? Dr. Stacy Sims Official

6.1K views - 1 month ago

Should Women Eat Before Morning Exercise? Cortisol Spike Explained

Should Women Eat Before Morning Exercise? Cortisol Spike Explained Dr. Stacy Sims Official

10K views - 2 months ago

How Women Should Hydrate in Training: Sweat Rate, Sodium, Menstrual Cycle, and Perimenopause

How Women Should Hydrate in Training: Sweat Rate, Sodium, Menstrual Cycle, and Perimenopause Dr. Stacy Sims Official

17K views - 2 months ago

Fasted Workouts for Women: How Cortisol, Appetite Hormones, and Lean Mass Are Affected

Fasted Workouts for Women: How Cortisol, Appetite Hormones, and Lean Mass Are Affected Dr. Stacy Sims Official

13K views - 2 months ago

Perimenopause Brain Fog: How Estrogen and Progesterone Receptors Affect Fear, Stress, and Cognition

Perimenopause Brain Fog: How Estrogen and Progesterone Receptors Affect Fear, Stress, and Cognition Dr. Stacy Sims Official

6.9K views - 2 months ago

Weights Then Sprints, or Sprints Then Weights? What Women Over 40 Actually Need to Know

Weights Then Sprints, or Sprints Then Weights? What Women Over 40 Actually Need to Know Dr. Stacy Sims Official

29K views - 2 months ago

Why HIIT and Sprint Intervals Are the Best Medicine for Perimenopausal Women

Why HIIT and Sprint Intervals Are the Best Medicine for Perimenopausal Women Dr. Stacy Sims Official

15K views - 2 months ago

Creatine for Women: The Daily Dose for Muscle, Brain Health, and High-Intensity Training

Creatine for Women: The Daily Dose for Muscle, Brain Health, and High-Intensity Training Dr. Stacy Sims Official

9.6K views - 2 months ago

HIIT vs Sprint Interval Training: What’s the Difference and How Do You Apply It?

HIIT vs Sprint Interval Training: What’s the Difference and How Do You Apply It? Dr. Stacy Sims Official

27K views - 2 months ago

Creatine for Women Over 40: Benefits for Muscle, Brain, Bone and Gut + How Much to Take

Creatine for Women Over 40: Benefits for Muscle, Brain, Bone and Gut + How Much to Take Dr. Stacy Sims Official

8.6K views - 2 months ago

Heavy Lifting for Women Over 40: Why 3-5 Reps Beats 8-12 for Strength, Brain, and Longevity

Heavy Lifting for Women Over 40: Why 3-5 Reps Beats 8-12 for Strength, Brain, and Longevity Dr. Stacy Sims Official

58K views - 2 months ago

How Heavy Lifting Protects the Female Brain in Menopause (The Lactate Connection)

How Heavy Lifting Protects the Female Brain in Menopause (The Lactate Connection) Dr. Stacy Sims Official

9.4K views - 2 months ago

Why Walking and Running Are NOT Enough to Protect Women's Bones in Perimenopause

Why Walking and Running Are NOT Enough to Protect Women's Bones in Perimenopause Dr. Stacy Sims Official

7.1K views - 2 months ago

What Biomarkers Should Women Track? HRV Trends, Pregnancy Changes, and Perimenopause Baselines

What Biomarkers Should Women Track? HRV Trends, Pregnancy Changes, and Perimenopause Baselines Dr. Stacy Sims Official

7.1K views - 2 months ago

You’re Not Doing HIIT And That’s Why It’s Not Working

You’re Not Doing HIIT And That’s Why It’s Not Working Dr. Stacy Sims Official

19K views - 3 months ago

How Fiber and Gut Microbiome Diversity Affect Bone Health in Perimenopausal Women

How Fiber and Gut Microbiome Diversity Affect Bone Health in Perimenopausal Women Dr. Stacy Sims Official

13K views - 3 months ago

Is It Too Late to Build Bone Density After Menopause? Resistance Training and Impact Exercise

Is It Too Late to Build Bone Density After Menopause? Resistance Training and Impact Exercise Dr. Stacy Sims Official

25K views - 3 months ago

Why Collagen Is NOT a Protein (And What Women Actually Need for Bone Health)

Why Collagen Is NOT a Protein (And What Women Actually Need for Bone Health) Dr. Stacy Sims Official

26K views - 3 months ago

How to Build Bone Density After 40: Resistance Training, HRT, and Creatine

How to Build Bone Density After 40: Resistance Training, HRT, and Creatine Dr. Stacy Sims Official

52K views - 3 months ago

Why Your Work Schedule Was Built for a Man (And What Women Actually Need)

Why Your Work Schedule Was Built for a Man (And What Women Actually Need) Dr. Stacy Sims Official

11K views - 3 months ago

Why Women Are Wasting Money on Peptides When the Fix Is Free

Why Women Are Wasting Money on Peptides When the Fix Is Free Dr. Stacy Sims Official

14K views - 3 months ago

The Eating Window That Actually Works for Women Over 40 (It's Not What You Think)

The Eating Window That Actually Works for Women Over 40 (It's Not What You Think) Dr. Stacy Sims Official

51K views - 3 months ago

Why Women Were Taught to Be Proud of Losing Their Period (And How It's Destroying Female Athletes)

Why Women Were Taught to Be Proud of Losing Their Period (And How It's Destroying Female Athletes) Dr. Stacy Sims Official

3.3K views - 3 months ago

Why Eating Less and Training More Makes Women Lose Muscle and Gain Fat

Why Eating Less and Training More Makes Women Lose Muscle and Gain Fat Dr. Stacy Sims Official

16K views - 3 months ago

Dr. Stacy Sims: The Truth About MHT for Women Over 40: Is It Really the Holy Grail?

Dr. Stacy Sims: The Truth About MHT for Women Over 40: Is It Really the Holy Grail? Dr. Stacy Sims Official

6.4K views - 3 months ago

Why Are Women Chronically Under-Eating Protein - and How Much Do You Actually Need?

Why Are Women Chronically Under-Eating Protein - and How Much Do You Actually Need? Dr. Stacy Sims Official

12K views - 3 months ago

Menopause Hormone Therapy and Training: What MHT Can and Cannot Do for Body Composition

Menopause Hormone Therapy and Training: What MHT Can and Cannot Do for Body Composition Dr. Stacy Sims Official

4.1K views - 3 months ago

Why Women Struggle With Body Composition No Matter How Well They Eat: The Gut Microbiome Fix

Why Women Struggle With Body Composition No Matter How Well They Eat: The Gut Microbiome Fix Dr. Stacy Sims Official

37K views - 3 months ago

Why High Intensity Training Works Better Than Zone 2 for Women in Perimenopause

Why High Intensity Training Works Better Than Zone 2 for Women in Perimenopause Dr. Stacy Sims Official

28K views - 3 months ago

Why Midlife Women Feel Strong One Week and Terrible the Next (It's Not Fitness)

Why Midlife Women Feel Strong One Week and Terrible the Next (It's Not Fitness) Dr. Stacy Sims Official

10K views - 3 months ago

OSTEO-GAINS Demo: How the OSTEO-Vert Jump Builds Bone Strength

OSTEO-GAINS Demo: How the OSTEO-Vert Jump Builds Bone Strength Dr. Stacy Sims Official

42K views - 4 months ago

Why Your Training Isn't Building Muscle Anymore in Perimenopause, and How to Fix It

Why Your Training Isn't Building Muscle Anymore in Perimenopause, and How to Fix It Dr. Stacy Sims Official

11K views - 4 months ago

How to Use Creatine for Muscle, Brain Power & Better Recovery

How to Use Creatine for Muscle, Brain Power & Better Recovery Dr. Stacy Sims Official

428K views - 4 months ago

The Post-Workout Eating Window for Women: Why Timing Affects Muscle and Recovery

The Post-Workout Eating Window for Women: Why Timing Affects Muscle and Recovery Dr. Stacy Sims Official

20K views - 4 months ago

Why Muscle Mass Is a Longevity Marker: What Happens When You Lose It

Why Muscle Mass Is a Longevity Marker: What Happens When You Lose It Dr. Stacy Sims Official

5.2K views - 4 months ago