Articles by Dr Stacy Sims

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How to Train Your Gut

Females suffer more GI issues than their male counterparts. Here’s how to get the fuel you need without the GI distress you don’t. Women are no strangers to GI distress. Research shows we’re more prone to symptoms like bloating, stomach cramps, and constipation, partially because of monthly horm...

by Dr Stacy Sims — Oct 14, 2024 fueling gut hydration microbiome

How to Track Your Menstrual Cycle

Take your performance to the next level by understanding your unique physiology. In the summer of 2019, the U.S. Women’s National Team (USWNT) won the World Cup, making it the U.S. women’s fourth World Cup title. They scored a record-setting 26 goals throughout the tournament and also made histo...

by Dr. Stacy Sims — Oct 14, 2024 contraception hormones menstrual cycle perimenopause period tracking training

Gut Health for Active Women

Updated March 11, 2026 Why Your Microbiome Matters for Hormones, Metabolism, and Performance When we talk about fueling for training and performance, most of the focus is on what you eat. But there’s another critical part of the equation that often gets overlooked: what your gut microbes do wit...

by Dr Stacy Sims — Oct 14, 2024 carbohydrates fueling gut hormones intensity menopause microbiome nutrition perimenopause protein

Are You Iron Deficient? Are You Sure?

Research shows iron deficiency is underestimated in women, and it’s taking a toll on our health and performance. Iron is essential for energy. It helps your body deliver oxygen to your working muscles and the mineral participates in the energy making process in your mitochondria. It’s also a ke...

by Dr Stacy Sims — Oct 14, 2024 anemia iron

Resolve to Get Strong

Skip the fad diets and detoxes. This year, resolve to do the one thing that improves health-span and lifespan—make muscle. The new year inevitably ushers in a fresh crop of diet books and 30-day detoxes. Skip the keto, low-carb, and fasting. Detoxes and cleanses are no more than marketing scams...

by Dr Stacy Sims — Oct 14, 2024 muscle strength

Optimizing Female Performance at Altitude

How to work with your female physiology to succeed in thin air. If you’ve ever run, biked, hiked, or skied in the U.S. Rockies, European Alps, the Himalayans, or anywhere high above sea level—especially above 2400 meters or 8000 feet—you know performance drops as the air thins. That’s because ox...

by Dr Stacy Sims — Oct 13, 2024 altitude

Training and Racing Through PMS

By working with your premenstrual physiology, you can make progress (and yes, podiums) despite the challenges of premenstrual syndrome. By now, you’ve heard me talk all about “period power”—that your menstrual cycle is when your body is more resilient to stress and a great time to nail your high...

by Dr Stacy Sims — Oct 13, 2024 period pms

Female Athletes Are Redefining Active Pregnancy

Elite women are training, competing, and yes, winning, during and after pregnancy, rewriting the playbook for moms in sport. It wasn’t that long ago that active women were discouraged from continuing their exercise routine when they got pregnant. Sure, they were supposed to meet the bare minimum...

by Dr Stacy Sims — Oct 13, 2024 pregnancy

How to Beat Jet Lag

Whether you’re crossing time zones or working shift work, circadian rhythm disruption takes a toll, and is worse for women. Here’s what to know. Anyone who’s been in an airport lately knows that travel is back. Airports and planes are packed as people take long overdue vacations, head to destina...

by Dr Stacy Sims — Oct 13, 2024 jetlag recovery sleep

Should Women Take Collagen Supplements?

Collagen is the current darling of the wellness industry. It can benefit a lot of women, but not all supplements work the same. More women (and men for that matter) are interested in collagen supplements than ever before. Weightlifters believe they can enhance muscle mass. Athletes want them to ...

by Dr Stacy Sims — Oct 13, 2024 collagen nutrition supplements

Thriving in Postmenopause

Kerry Litka talks about her change of perspective as a post-menopausal woman For a change of pace, I thought that a case study of a woman in our community might be of interest to my readers, and it ties in nicely with the sale of my Menopause 2.0 course. Kerry Litka originally submitted a testim...

by Dr Stacy Sims — Oct 13, 2024 menopause menstrual cycle

Why Menopausal Women Need Polarized Training

Donating blood is great. But you don’t need to give a pint to gain fitness as new research may suggest. Women are not small men. It’s been my mantra for well over a decade. In recent years, the scientific community has been catching up and calling attention to sex differences in exercise adaptat...

by Dr Stacy Sims — Oct 13, 2024 menopause perimenopause training

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