Testosterone in Your 20s Could Hurt Fertility | Jen Pfleghaar | DSH #1847

Mar 6, 2026

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On this episode of Digital Social Hour, we’re at A4M with Jen, an upcoming speaker on cycle syncing and perimenopause optimization. She breaks down how women’s hormones shift across the month (and how training like a man all month can backfire), why intense HIIT and marathon-style cardio can spike cortisol and lead to weight gain in perimenopause, and how men can actually improve their relationship by understanding the phases of the cycle. We also talk fertility, insulin resistance, progesterone, endocrine disruptors (hello plastics), why stress is crushing libido, and a practical look at pelvic floor therapy, recovery, and what actually helps women feel better — without immediately jumping to prescriptions. Jen also shares where to find her work and her book The Perimenopause Reset. 🎯 What You’ll Learn 🩸 How cycle syncing works (and why it helps relationships too) 🏋️‍♀️ When women can safely push hard in the gym vs when to deload ⚠️ Why HIIT + marathon training can spike cortisol and increase belly fat in perimenopause 🧠 Why anxiety, weight gain, and poor sleep often trace back to hormones + stress 🍬 How insulin resistance and PCOS impact fertility and cycle length 🧪 How plastics and endocrine disruptors may affect hormones 😴 Why libido issues are often cortisol-related (not “low T”) 🧘‍♀️ What pelvic floor therapy can improve (pain, recovery, sex, even bathroom habits) Chapters 0:00 The “perimenopause” doctor script (BC + antidepressants) 0:36 Meet Jen at A4M + what she’s speaking on 0:50 What “cycle syncing” actually means 1:58 Follicular phase: when women can train harder 2:20 Luteal phase: higher injury risk + why HIIT can backfire 3:17 Marathon training + cortisol weight gain in perimenopause 4:37 Birth control in late 30s + why symptoms persist 5:39 Fertility issues: insulin resistance, PCOS, short cycles 6:39 Endocrine disruptors + plastics + hormone chaos 7:02 Men’s fertility, testosterone, and stress 9:01 Libido isn’t always testosterone — it’s often cortisol 11:40 Bedroom tools, pelvic floor therapy, and what gets ignored 🎙️ APPLY OR CONNECT 👉 Interested in being a guest? Apply here: https://www.digitalsocialhour.com/apply 💼 SPONSORS: QUINCE: https://quince.com/dsh 🥗 Fuel your health with Viome: https://buy.viome.com/SEAN Use code “Sean” at checkout for a discount! The Light Systems: https://www.thelightsystems.com/ Discount Code: SEAN 📩 Business Inquiries & Sponsorships sean@digitalsocialhour.com 👤 GUEST Jen Pfleghaar : https://www.instagram.com/pflegmed/ 🎧 LISTEN TO THE PODCAST 🍏 Apple Podcasts: https://podcasts.apple.com/us/podcast/digital-social-hour/id1676846015 🎵 Spotify: https://open.spotify.com/show/5Jn7LXarRlI8Hc0GtTn759 📸 Follow the Host Sean Kelly on Instagram: @seanmikekelly ⚠️ DISCLAIMER The views and opinions expressed by guests on Digital Social Hour are their own and do not necessarily reflect those of the host, Sean Kelly, or the Digital Social Hour team. The host and producers are not responsible for statements, claims, or opinions shared by guests during the show. This content is intended for informational and entertainment purposes only and should not be considered legal, medical, financial, or professional advice. Listeners are encouraged to do their own research and consult qualified professionals when appropriate. While we aim to share accurate and reliable information, no guarantees are made regarding completeness or accuracy. 🔥 Stay tuned for more conversations with creators, founders, and innovators shaping the digital world. Keywords: Digital Social Hour, DSH podcast, A4M interview, perimenopause, perimenopause symptoms, cycle syncing, menstrual cycle phases, follicular phase workouts, luteal phase training, HIIT cortisol, marathon training weight gain, women’s hormones, estrogen dominance, progesterone deficiency, fertility issues Visit Our Website at https://digital-social-hour.simplecast.com/ Presented by https://podgo.io/ Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com for information about our collection and use of personal data for advertising.