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Cycle Syncing Secrets with Dr. Jen Pfleghaar

Serena Russum
Serena Russum

Practicing Physician at Blossoming Longevity

Heidi Codino
Heidi Codino

Advisory Board Member, Menopause Association

Jen Pfleghaar
Jen Pfleghaar

Founder, Healthy by Dr. Jen

8 months ago
  • Perimenopause begins earlier—and feels different—than most women expect. Dr. Jen explains that perimenopause is marked by a steady decline in progesterone alongside erratic estrogen swings. This hormonal imbalance can begin in a woman’s late 20s or 30s, often driven by chronic stress, inflammation, and root-cause health issues. Symptoms such as weight gain, anxiety, poor sleep, and brain fog are common—but not inevitable.
  • Cycle syncing aligns training and nutrition with female biology. Rather than pushing the same routine every day, cycle syncing honors the two main phases of the menstrual cycle: Follicular Phase (Days 1–14): Estrogen-dominant, insulin-sensitive, and resilient. This is the ideal time for HIIT, heavy lifting, fasting, keto-style eating, and chasing personal records. Luteal Phase (Days 15–28): Progesterone-dominant, more insulin-resistant, and injury-prone. Training should shift to mobility, walking, and lighter strength work, while nutrition should increase complex carbohydrates and healthy fats and avoid fasting to protect progesterone and cortisol balance.
  • Hormone optimization fails without nervous system and spiritual alignment. Dr. Jen emphasizes that even the best biohacks and supplements will fall short if a woman remains stuck in fight-or-flight. Vagal nerve stimulation, muscle preservation, thoughtful hormone support, and faith-based practices are essential to moving into rest, resilience, and long-term hormonal health.

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