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The Science

At BREEV, every product and method is backed by science.

From nitric oxide and CO₂ tolerance to nervous system control — this section explores the research, physiology, and real-world application of breathing for performance, recovery, and longevity.

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  • How to Transform Your Breathing in 21 Days (and Why It Matters)

    How to Transform Your Breathing in 21 Days (and Why It Matters)

    By Jonathan Bret

    Reset your breathing in 21 days. Discover science-backed breathwork techniques to improve sleep, focus, recovery, and endurance plus BREEV Performance & Recovery tools to accelerate results.

  • best nasal strips for cycling

    Best Nasal Strips for Cycling: A Complete Guide to Breathing Better on the Bike

    By Jonathan Bret

    We believe every cyclist deserves to experience the benefits of better breathing. Whether you’re chasing a new PB, tackling weekend rides, or simply seeking more comfort on the bike, small tools can make a big difference.

  • Why Every Hybrid Athlete Needs to Train Their Breath

    Why Every Hybrid Athlete Needs to Train Their Breath

    By Jonathan Bret

    Nasal breathing improves oxygen efficiency, CO₂ tolerance, and recovery. It sharpens focus under load and accelerates adaptation while you sleep. With simple tools like nasal strips in training and mouth tape at night, breath becomes a lever you can actually train and the gains show up across strength, endurance, and recovery.

  • Beginner’s Guide to Switching from Mouth to Nose Breathing

    Beginner’s Guide to Switching from Mouth to Nose Breathing

    By Jonathan Bret

    Switching from mouth to nose breathing can improve endurance, sleep, and recovery. Learn the science, benefits, and step-by-step method for mastering nasal breathing.