Articles by Dr Stacy Sims

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Tags: cortisol

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Cold Plunging for Women: Why Colder Isn’t Always Better

Cold plunging has exploded in popularity, with everyone from elite athletes to wellness influencers posting their ice bath rituals. But long before it hit social media, cold-water immersion was a Nordic tradition—often paired with saunas—as a way to build resilience, reset the mind, and connect...

by Dr. Stacy Sims — Nov 05, 2025 cold cortisol hormones recovery training

Kisspeptin: What We Learned from Rodents—and How We’ve Moved On

When I talk about female athletes, hormones, and health, I always start from a simple but critical foundation: energy availability. It’s the balance between how much energy you take in (from food) and how much you expend (through training, daily life, and basal metabolic rate). When that bala...

by Dr. Stacy Sims — Oct 24, 2025 cortisol fueling hormones lea menstrual cycle

Why HIIT Matters for Women’s Body and Brain Health

If you’ve been following me for a while, you know I love busting myths—especially in women’s training. One of the most persistent? “More long, steady cardio is always better.” Don’t get me wrong—Zone 2 training has its place. It builds your aerobic base, supports mitochondrial health, and imp...

by Dr. Stacy Sims — Aug 20, 2025 cortisol creatine hiit intensity longevity recipes supplements

Why Fasting Doesn’t Work for Active Women

Of all the topics I cover, fasting is easily one of the most polarizing. But it’s also one I feel strongly about—because the science is clear, and I want to help women avoid its many pitfalls. While some women do say they feel good when fasting, the long-term research tells a different story....

by Dr. Stacy Sims — Jun 25, 2025 carbohydrates cortisol hormones intermittent fasting

Midlife Women Can and Should Do High Intensity Exercise

It’s time to HIIT back on cortisol myths and misunderstandings “Don’t do HIIT, it increases cortisol!” “Don’t have too much caffeine, it increases cortisol!” “If you have a “stress belly” your cortisol levels are too high!” I see post after post on the “evils'' of cortisol for midlife and menopa...

by Dr. Stacy Sims — Oct 14, 2024 cortisol hiit sit

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