Complete respiratory training
Unlike resistance-only trainers, Isocapnic BWB systems support sustained, high-volume training of both inhalation and exhalation. The calibrated rebreathing circuit recaptures a controlled portion of exhaled air while continuously admitting fresh air, helping maintain CO₂ and support normal oxygen saturation during demanding respiratory training.
TRAIN WHAT ORDINARY EXERCISE NEGLECTS
A respiratory trainer gives your breathing system a dedicated training stimulus. Depending on its design, it may challenge breathing strength, endurance, volume or control. Isocapnic BWB systems combine resistance with sustained, high-volume inhalation and exhalation training while limiting excessive CO₂ loss. Learn how respiratory muscle training works.
Practice moving larger breaths through a full range.
Load both inhalation and exhalation muscles.
Build the ability to sustain demanding breathing work.
Develop steadier breathing as workload increases.
HOW ISOCAPNIC WORKS
The BWB is designed to recapture a controlled portion of exhaled air while fresh air enters, helping limit excessive CO₂ loss during sustained, large-volume respiratory work. Learn more
01
Attach the breathing bag and install the mouthpiece or mask.
02
Use guided pacing, session targets, and structured programs.
03
Increase range, frequency, volume, and workload over time.
CHOOSE YOUR SYSTEM
Compare BWB Sport and BWB Mask, then choose the respiratory trainer that best matches how you plan to train.
The mouthpiece-based system recommended for most athletes. BWB Sport is compact, highly portable and designed for straightforward daily respiratory training sessions.
The hands-free system built around an industry-leading Hans Rudolph mask. BWB Mask supports nasal and oral breathing during prolonged or movement-based respiratory training sessions.
BWB Sport is recommended for most athletes. If you are still unsure, take the free product-fit assessment.
Device and app, together
The included app turns the BWB into a complete training system with guided pacing, progressive programs, warm-ups, recovery sessions and focused lung-volume work. Explore the Isocapnic app.
The Proof
Follow six-time world champion Cory Wallace’s measured respiratory progression, from a documented limiter to a system he describes as one of his strengths.
RESPIRATORY TRAINER FAQ
A respiratory trainer gives the muscles and movement patterns used for breathing a dedicated training stimulus. Different systems may focus on strength, endurance, breathing volume or control.
Unlike resistance-only trainers, the BWB combines resistance with sustained, high-volume training of both inhalation and exhalation. Its calibrated rebreathing circuit recaptures a controlled portion of exhaled air while admitting fresh air to help maintain CO₂ and support normal oxygen saturation.
Yes. BWB sessions train the muscles used during both phases of breathing through guided, progressive programs in the included app.
BWB Sport is the portable mouthpiece system recommended for most athletes. BWB Mask supports nasal, oral and hands-free training, including movement-based sessions. Take the free assessment if you are unsure.
Consistent BWB training can improve respiratory muscle endurance, strength and control. These adaptations can support better sport performance and faster recovery between efforts. Individual results vary.
Follow the introductory program in the Isocapnic app together with the manual and safety guidance. Stop a session if you feel dizzy, lightheaded or unwell.
Yes. Guided sessions, structured plans and beginner onboarding are included without a subscription.
Use the system consistently, complete the introductory program and measure your progress. If you do not see an improvement in ventilatory performance, contact Isocapnic within 30 days to arrange your return.
Use your Isocapnic system consistently, complete the introductory training program and measure the difference for yourself.
Complete the introductory programs and measure your progress. If you do not see an improvement in your ventilatory performance, contact us within 30 days and we will arrange your return
Train your complete respiratory system
Choose your BWB system. Guided app access and beginner onboarding are included.
