The Evolving Wellness Podcast with Sarah Kleiner Wellness

What Cold Exposure Does to Hormones, Stress, and Fertility | Dr. Tom Seager

Feb 4, 2026
Dr. Tom Seager, a clinician focused on fertility and thermoregulation, joins to unpack cold exposure, circadian and pregnancy physiology. They discuss how to dose cold safely, timing around ovulation and implantation, and using seasonal eating and metabolic flexibility to support fertility. Practical clinical context and questions keep the conversation grounded and actionable.
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INSIGHT

Mitochondria, Leptin, And Circadian Health Matter

  • Leptin, circadian biology, and mitochondrial health are key drivers of fertility according to Dr. Jack Cruz's guidance Sarah cites.
  • Improving mitochondrial function and leptin signaling can restore fertility without immediately resorting to IVF.
ANECDOTE

Skipped Cold During Pregnancy, Easy Natural Labor

  • Sarah skipped cold plunges during pregnancy and saved for a Morozko Forge to use postpartum, prioritizing safety after prior losses.
  • Her labor was natural and easier than her prior induced birth, and she credits preparation and lifestyle factors.
ADVICE

Make A Birth Plan And Decide Ahead

  • Create a clear birth plan and communicate it early to reduce unwanted interventions and make decisions ahead of intense labor moments.
  • Treat the plan as intention, not predestination, and remain ready to adapt if clinical emergencies arise.
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