How to Prevent & Treat Colds and Flu — Science-Based Tools for Your Immune System

In this episode, I discuss the science of how to prevent colds and flu — and what to do the moment you feel symptoms coming on to recover faster and reduce severity. I break down the biology of your immune system, explain what actually works (and what doesn't), and give you a clear, actionable protocol based on peer-reviewed research. We cover: — How rhinoviruses and influenza viruses enter and spread through the body — Why most people get sick in fall and winter (the real biological reasons) — The role of sleep, nasal breathing, and body temperature in immune defense — Zinc, Vitamin D, Vitamin C, and NMN — what the data actually says — Cold exposure, sauna, and exercise — when they help vs. when they hurt — The first 24–48 hours: exact steps to take when symptoms start — Supplements with strong evidence: dosing, timing, and sourcing — How to use nasal rinses and humidity to reduce viral load — When to rest vs. when to push through — and why it matters for recovery Whether you want to stay healthy all winter or recover faster when you do get sick — this episode gives you the tools rooted in real science. — 🧠 CHAPTERS: 00:00 — Introduction & why cold and flu season hits hard 04:15 — How viruses enter the body & what your immune system does 12:30 — Sleep, nasal breathing & body temperature as immune tools 22:00 — Vitamin D, Zinc & Vitamin C — what the evidence says 33:45 — Cold exposure & sauna — timing and protocols 44:20 — First 24–48 hours: the sick-day action plan 55:10 — Supplements with real evidence (dosing & timing) 01:05:00 — Long-term immune resilience habits 01:12:00 — Key takeaways & closing — 📌 Resources & Studies Referenced: Hemilä et al. on Zinc & cold duration (Cochrane Review) Martineau et al. on Vitamin D & respiratory infections (BMJ, 2017) Walker et al. on sleep & immune function (Sleep, 2019) — Subscribe for weekly episodes on science-based health, performance, and longevity. #ColdAndFlu #ImmuneSystem #HubermanLab #HowToPreventColds #FluSeason #VitaminD #SleepAndImmunity #ScienceBasedHealth #WinterWellness #NeuroscienceHealth