Why do healthy habits sometimes stop working in midlife? In this episode, Karen Martel talks with Debbie Potts about what she calls "metabolic chaos" — the way chronic fasting, intense exercise, and under-eating can turn into hidden stressors on the nervous system. They dig into sympathetic dominance, low HRV, and why more discipline isn't always the answer for women navigating perimenopause and menopause.

Have you ever felt like you're doing everything right and your body just isn't cooperating? You're eating well, exercising, tracking your protein, fasting, taking your supplements, getting your steps in — and you're still gaining weight, still exhausted, still sleeping poorly. If that sounds familiar, this episode is for you.

I sat down with Debbie Potts to talk about what's actually happening when healthy habits become unhealthy stressors. We get into the connection between the nervous system, metabolism, hormones, muscle, recovery, under-fueling, overtraining, and the chronic stress load so many women are carrying in midlife.

We also talk about why more isn't always better. Sometimes the answer isn't another workout, another fast, another supplement, or another hormone adjustment. Sometimes your body needs a completely different signal — more safety, more fuel, more recovery, more muscle, less chronic cardio, less obsession, less trying to force your body into submission.

This is a conversation about learning to read your body differently, and understanding that it may not be failing you at all. It may be adapting exactly the way it was designed to.

Listen to the Full Episode on Apple Podcasts

In This Episode, We Discuss

• Why women can do everything "right" and still gain weight and feel exhausted
• What Debbie means by "metabolic chaos"
• How sympathetic dominance can affect energy, digestion, sleep, and recovery
• Why chronic fasting, low-carb diets, and excessive cardio can become stressors
• The difference between AMPK and mTOR, and why midlife women need both
• Why under-eating can slow metabolism and make muscle gain harder
• How protein and strength training help support a stronger midlife metabolism
• Why low HRV can be a clue that your nervous system is under too much load
• The role of the vagus nerve in digestion, inflammation, and recovery
• Why hormones and peptides may help, but cannot replace foundational habits

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Key Takeaways

• "Doing everything right" can still backfire if your habits are adding to your stress load rather than reducing it. Fasting, intense cardio, and calorie restriction aren't universally good — context and your current nervous system state matter.
• Sympathetic dominance is a hidden driver of fatigue, poor sleep, and stubborn weight. A nervous system stuck in fight-or-flight can disrupt digestion, blood sugar regulation, and recovery.
• AMPK and mTOR both matter. Leaning too far into fasting-driven pathways without supporting muscle-building pathways through protein and strength training can work against your goals.
• Under-eating can slow you down, not speed you up. Chronic calorie or protein deficits may affect thyroid function and make it harder to build the muscle that supports midlife metabolic health.
• HRV is a useful, practical signal. Tracking heart rate variability can offer objective feedback on whether your current routine is helping or hurting your recovery.
• The vagus nerve matters for more than calm. Vagal tone influences digestion, inflammation, and how efficiently your body can shift out of a stress response.
• Hormones and peptides support, but don't replace, the basics. Foundational habits — enough fuel, enough protein, appropriate training, and real recovery — still do most of the work.

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Frequently Asked Questions

What is "metabolic chaos"?

Metabolic chaos, as Debbie Potts describes it, is the state that results from too many competing stressors — under-fueling, overtraining, poor sleep, and chronic psychological stress — without enough recovery to offset them. In midlife, declining estrogen and progesterone can make the nervous system more reactive, so habits that once worked well may start to backfire when layered on top of an already stressed system.

Is it normal to gain weight in perimenopause even with a healthy diet and exercise routine?

Yes, this is a common experience during perimenopause and menopause, and it isn't necessarily a sign you're doing something "wrong." Hormonal shifts can affect insulin sensitivity, muscle mass, and stress resilience, and habits like chronic fasting or excessive cardio may add stress rather than relieve it. Working with a knowledgeable practitioner can help identify what's actually driving your specific symptoms.

Can too much fasting or cardio actually hurt my metabolism?

For some women, yes — particularly when fasting or cardio is layered on top of an already high stress load or insufficient food intake. This doesn't mean fasting or cardio are inherently bad; it means the amount, timing, and your current recovery capacity matter more than following a one-size-fits-all rule.

What is HRV, and why does it matter in midlife?

HRV, or heart rate variability, measures the variation in time between heartbeats and is often used as an indicator of how well the nervous system is recovering from stress. A consistently low HRV can suggest the body is carrying more physiological load than it's currently able to recover from, which may show up as fatigue, poor sleep, or stalled progress despite consistent effort.

Can hormone therapy or peptides fix metabolic chaos on their own?

Hormone therapy and peptides may help support energy, recovery, and body composition for some women, but they generally aren't a substitute for foundational habits. Adequate protein, appropriate strength training, sufficient sleep, and nervous system recovery still play a central role, with hormones and peptides working best as part of a broader plan rather than a stand-alone fix.

What should I ask my healthcare provider if I suspect my nervous system is overloaded?

It can help to ask about assessing your current stress load holistically — including sleep quality, training intensity, caloric and protein intake, and markers like HRV — rather than looking at diet or exercise in isolation. A provider familiar with women's hormonal health in midlife can also help you determine whether hormone testing or other evaluation is appropriate for your specific symptoms.

Does eating less always help with weight loss in midlife?

Not necessarily. Chronic under-eating can signal to the body that resources are scarce, which may affect thyroid function and make it harder to build or preserve the muscle mass that supports a healthy metabolism. For many women, addressing under-fueling — alongside strength training — is a more effective long-term strategy than further calorie restriction.

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About the Guest

Debbie Potts

Debbie Potts is a Functional Diagnostic Nutrition Practitioner, Functional Nutritional Therapy Practitioner, health and performance coach, author, podcast host, and former elite endurance athlete with more than 30 years of experience in the health and fitness industry.

Debbie specializes in helping driven, high-performing adults—particularly those navigating midlife—improve energy, metabolic health, resilience, and performance. Through functional lab testing, nutrition, lifestyle strategies, metabolic testing, and personalized coaching, she takes a “health detective” approach to identifying potential stressors and imbalances that may be getting in the way of feeling and performing at your best.

Debbie is also the creator of The WHOLESTIC Method, author of Life Is Not a Race…It Is a Journey, and host of The Coach Debbie Potts Show, where she explores metabolic health, fitness, nutrition, healthy aging, and strategies for improving performance and longevity.