







OXYFIT™ Breath Trainer - Cardio Edition
Naturally prevent or relieve breathing problems, improve stamina and boost performance with our scientifically backed OXYFIT™ Breath Trainer - Cardio Edition!
✔ Improve lung capacity and function
✔ Improve stamina & endurance
✔ Fix the root cause of breathing problems
Improved Oxygen Exchange:
Regular breathing exercises enhance the oxygenation of the blood and facilitate its transport to muscles and other organs. This increases their efficiency and resistance to fatigue, which is especially important in sports and physical exertions.
Enhanced Physical Fitness and Endurance:
Regular breathing exercises strengthen the respiratory muscles, improve lung ventilation, and contribute to longer physical exercise durations without feeling tired.
Stress Level Regulation:
The ability to control your breathing activates the parasympathetic nervous system, responsible for the body's rest and recuperation mode. This helps reduce stress and anxiety levels, making it easier to relax and improve sleep quality.
Increased Concentration and Mindfulness:
Breathing practices require focus, which helps train the ability to concentrate. This positively affects not only the performance of physical exercises but also daily activities that require attention and focus.
Optimization of Energy Metabolism:
Proper breathing helps improve metabolism, promoting more efficient energy use and calorie burning, which is particularly relevant for maintaining an ideal weight.
1. Put Device In Your Mouth
2. Inhale Through Device
3. Exhale Through Device
4. Repeat For 3-5 Minutes
Repeat daily, never train too hard, start slow and increase resistance as you get stronger
We have a page of medical journals on the benefits of using the OXYFIT™ Breath Trainer, you can find this here.

Control Your Airflow
By adjusting the airflow, you can customize your workout to suit your fitness level. You can increase or decrease the resistance to achieve maximum efficiency and enhance your lung capacity. This will enable you to breathe more comfortably and improve your physical endurance. Whether you are a beginner or an experienced athlete, this is perfect for you.
Explore the Key Benefits
Discover how the OXYFIT™ Breath Trainer can improve your breathing, enhance your workouts, and boost your overall health with its smart design and easy use.
Your diaphragm is a muscle — and like any muscle, it gets stronger with resistance training.
The OXYFIT Breath Trainer forces your respiratory muscles to work harder with every breath, building raw breathing power that translates directly into longer, stronger workouts. More stamina starts with stronger lungs.
Each session trains your diaphragm and intercostal muscles to stretch deeper and contract harder — gradually expanding the volume of air your lungs can hold and use.
More air per breath means more oxygen delivered to your muscles with less effort. Athletes and everyday users alike notice they can breathe deeper and hold their breath longer within the first few weeks of consistent training.
When your breathing muscles tire out during exercise, your body redirects blood flow away from your legs and arms to keep you breathing. That's why you feel heavy and gassed before your body is actually done.
The OXYFIT Breath Trainer delays this fatigue response by building a stronger, more efficient respiratory system — so you stay energized longer and recover faster between sets.
Rebuilding lung strength is one of the most powerful steps in quitting smoking or vaping. The OXYFIT Breath Trainer strengthens the respiratory muscles that nicotine has weakened, improves oxygen flow, and gives your lungs a daily recovery workout.
Many users find that the act of focused breathing through resistance also helps manage cravings and withdrawal anxiety — replacing a harmful habit with a healthy 5-minute ritual.
Breathing is the foundation of every physical and mental effort — yet almost nobody trains it.
The OXYFIT Breath Trainer gives you conscious control over your breath, so you can regulate intensity during workouts, stay calm under pressure, and push through moments where others gas out. When you master your breath, you master your performance.
The OXYFIT Breath Trainer is built on the principle of Respiratory Muscle Training (RMT) — a method backed by clinical studies and meta-analyses showing measurable improvements in breathing muscle strength, exercise endurance, and reduced breathlessness.
The same method is used by Olympic athletes, military training programs, and pulmonary rehabilitation clinics worldwide. This isn't a trend — it's science you can feel working from day one.
Stronger breathing muscles support slower, deeper breathing patterns at rest — the kind that activates your parasympathetic nervous system and helps your body shift into recovery mode.
Users consistently report falling asleep faster, breathing more quietly through the night, and waking up feeling more rested. Better breathing during the day leads to better recovery at night.
Made from high-quality, medical-grade silicone that is non-toxic, BPA-free, odorless, and waterproof. Designed for daily oral use with complete peace of mind.
Easy to clean, built to last, and environmentally safe.
The ergonomic mouthpiece is designed with flexible silicone wings and a textured teeth-grip surface that comfortably adapts to any mouth shape or size.
No complicated sizing charts. No awkward fit. Just place it between your lips and start training — it conforms to you naturally from the first session.
88%
of athletes increased their stamina after using OXYFIT Breath Trainer daily.
*An anonymous survey conducted by OXYFIT via email one month after purchase revealed that a majority of users experienced improved stamina.


Athletic Breathing
Design Highlights
Tap the ”+” to view product features.


Custom Resistance Control
With the integrated dial, you can easily modify the breathing resistance level to suit your training intensity and fitness objectives. This makes it possible to exert precise control and guarantees a customized training program that changes as you advance.

Comfort Fit Mouthpiece
With its ergonomic design, the mouthpiece fits comfortably and securely in your mouth so that long training sessions don't cause you any discomfort. Its ergonomic design guarantees an ideal seal for successful resistance training.

Textured Grip
The textured surface on the mouthpiece provides a secure and stable grip, preventing slipping during intense breathing exercises. This feature enhances user confidence and comfort during use.
YOUR COMPLETE TRAINING SYSTEM
Device + expert protocol — everything you need to see results
5-min daily protocol
3 sport-specific breathing programs inside
Step-by-step: from Level 1 to peak lung capacity
Proven endurance & performance techniques
Included free with every order — $19.99 value
My trainer recommended the OXYFIT Breath Trainer, and I’m really impressed. My stamina and breath control during boxing training have significantly improved, allowing me to stay strong through the later rounds. Excellent tool.
I can’t believe how much the OXYFIT Breath Trainer has improved my running. My stamina increased dramatically, and I even set a new personal best in my last marathon. Thank you! It’s a must-have for any athlete!
FAQ
If you have additional questions, please feel free to reach out to us at info@oxyfit.com.
What is a breathing trainer device?
A breathing trainer is a compact, handheld device that creates adjustable resistance when you inhale and exhale. Think of it as a dumbbell for your lungs — it forces your diaphragm and intercostal muscles to work harder with every breath, progressively building their strength over time.
Unlike cardio exercises that train your heart and legs, a breathing trainer targets the respiratory muscles directly — the same muscles responsible for oxygen delivery to every part of your body.
Respiratory muscle training (RMT) is backed by clinical research and has been used by elite athletes, military personnel, and rehabilitation clinics worldwide.
How does the OXYFIT Breath Trainer work?
The OXYFIT Breath Trainer uses a scientifically proven airflow resistance mechanism to strengthen your breathing muscles. At its core is a precision-engineered adjustable valve that creates calibrated resistance on both inhalation and exhalation — forcing your diaphragm and intercostal muscles to work harder with every breath.
You simply place the medical-grade silicone mouthpiece between your lips and breathe normally for 5 minutes a day. The resistance valve controls how hard your respiratory muscles have to work on each breath — similar to adding weight plates on a barbell. As your muscles grow stronger, you gradually increase the resistance to keep progressing.
This principle — called Respiratory Muscle Training (RMT) — is backed by clinical research and meta-analyses showing significant improvements in exercise endurance, breathing muscle strength, and reduced perceived exertion in athletes who train consistently for 4–6 weeks.
The result: your lungs deliver more oxygen per breath, your diaphragm fatigues slower during exercise, and your overall endurance improves — all from a simple 5-minute daily routine.
Who is the OXYFIT Breath Trainer for?
The OXYFIT Breath Trainer is designed for anyone who wants to breathe better and perform stronger. It's used by runners, cyclists, swimmers, CrossFit athletes, BJJ practitioners, MMA fighters, hikers, basketball and soccer players who want to push their endurance further.
It's equally effective for beginners who get winded climbing stairs and want to rebuild their respiratory fitness. Weekend warriors, aging adults looking to maintain lung capacity, and anyone recovering from periods of inactivity will benefit from consistent use.
The adjustable resistance means the device meets you at your current level — whether you're a complete beginner or a competitive athlete chasing marginal gains.
What are the main benefits of using a breath trainer?
Consistent use of the OXYFIT Breath Trainer delivers several measurable benefits.
First, it increases lung capacity and breathing efficiency — meaning more oxygen reaches your muscles with less effort. Second, it strengthens the diaphragm, which delays the onset of respiratory fatigue during intense exercise. This directly improves athletic endurance — you can run longer, lift harder, and recover faster without gasping for air.
Third, stronger breathing muscles reduce perceived exertion, so the same workout feels easier over time. Beyond performance, users report improved focus, reduced stress and anxiety through better breath control, and deeper, more restful sleep.
For a complete breakdown of breathing techniques, resistance protocols, and performance tips, check out our free e-book "A Practical Guide to Mastering Your Breath" — included with every OXYFIT Breath Trainer purchase.
How often should I use a breathing trainer?
Most users train once in the morning as part of their daily routine and optionally add a second session before workouts as a respiratory warm-up.
Consistency matters more than duration: 5 minutes every day will deliver better results than 20 minutes twice a week.
Our free e-book "A Practical Guide to Mastering Your Breath," included with your purchase, contains a complete day-by-day training schedule with progressive resistance levels to help you get the most out of every session.
How long does it take to see results from a breathing trainer?
Most users notice an initial difference within the first 1–2 weeks of consistent daily use — typically a feeling of deeper, easier breathing and less breathlessness during moderate activity.
Measurable endurance improvements generally appear within 4–6 weeks, which is consistent with clinical studies on respiratory muscle training.
By week 8–12, the improvements compound: longer runs without gasping, faster recovery between sets, and noticeably better stamina in everyday activities like climbing stairs or playing with your kids.
The device also works as a rapid lung activator right before physical activity. Just 60 seconds of resistance breathing is enough to "wake up" your diaphragm, open your airways, and get your lungs firing at full capacity before you even start moving. Think of it like dynamic stretching — but for your respiratory system. Athletes who warm up their breathing muscles report that the first few minutes of exercise feel significantly easier and more controlled.
Results depend on consistency, starting fitness level, and proper progression of resistance. The free e-book included with your OXYFIT Breath Trainer outlines a structured training protocol so you know exactly when and how to increase resistance for continuous improvement.
Is the OXYFIT Breath Trainer the same as an altitude mask?
No — they're two different tools designed for two different purposes, and each one targets a unique aspect of your respiratory performance.
The OXYFIT Breath Trainer is a resistance-based device that strengthens your diaphragm and intercostal muscles through calibrated airflow resistance on both inhalation and exhalation. Think of it as weightlifting for your lungs — it builds raw breathing muscle strength, increases lung capacity, and improves oxygen delivery over time. Best used daily for 5 minutes as a standalone respiratory workout.
The OXYFIT Training Mask, on the other hand, restricts overall airflow to simulate high-altitude training conditions. This forces your cardiovascular system to adapt to reduced oxygen availability — improving your VO₂ max, oxygen efficiency, and mental toughness under stress. It's designed to be worn during workouts, runs, or cardio sessions to make your body more efficient at using the oxygen it gets.
In short: the Breath Trainer builds stronger breathing muscles. The Training Mask trains your body to perform better with less oxygen. One builds the engine, the other teaches it to run on less fuel.
For maximum results, many athletes use both — the Breath Trainer daily to strengthen respiratory muscles, and the Training Mask during workouts to push cardiovascular adaptation. That's exactly why we offer the Lung Trainer Pack bundle that combines both devices at a significant discount.
Is a breathing trainer safe for beginners?
Absolutely. The OXYFIT Breath Trainer is designed with an adjustable resistance dial that allows you to start at the lowest setting and increase gradually as your respiratory muscles adapt.
There is no risk of oxygen deprivation — you breathe normally, just against gentle resistance. This makes it safe and comfortable even for people with no prior experience in breath training.
If you feel lightheaded during initial use, simply lower the resistance and take shorter sessions until your body adjusts. The device is made from medical-grade, BPA-free silicone for complete safety.
Beginners will find step-by-step guidance, warm-up routines, and a progressive resistance schedule in the free e-book "A Practical Guide to Mastering Your Breath" that comes with every order.
Can a breathing trainer help with running endurance?
Yes — and running is one of the most common use cases for the OXYFIT Breath Trainer.
Here's why: during a run, your diaphragm fatigues before your legs do. When this happens, your body triggers a reflex called the respiratory metaboreflex, which redirects blood flow away from your legs and back to your breathing muscles. The result? Your legs feel heavy and you slow down — not because your legs are tired, but because your lungs gave out first.
By strengthening your diaphragm and intercostal muscles with the OXYFIT Breath Trainer, you delay this reflex. That means more oxygen reaching your legs for longer, less breathlessness per mile, and the ability to maintain pace deeper into your run.
Pro tip: use the Breath Trainer for just 60 seconds before your run as a respiratory warm-up. This activates your diaphragm and opens your airways so your lungs are already working at full capacity from the very first stride — no more "gasping through the first mile" while your breathing catches up to your legs.
Runners consistently report shaving time off personal records and feeling "in control" of their breathing instead of fighting it.
Should I use a breath trainer before or after workouts?
Both timing options offer benefits, but the ideal approach depends on your goals.
Before a workout — use the OXYFIT Breath Trainer for 60–120 seconds as a respiratory warm-up. This activates your diaphragm, opens your airways, and primes your breathing muscles for the effort ahead. Just like you wouldn't squat heavy without warming up your legs, your lungs perform best when they're activated before intense effort. Athletes who warm up their breathing report that the first few minutes of exercise feel noticeably easier — no more struggling to "find your rhythm."
After a workout or on rest days — use it for a full 5-minute session as dedicated respiratory strength training. This is where the real long-term gains happen: building raw diaphragm strength, increasing lung capacity, and training your breathing muscles to fatigue slower over time.
For maximum results, we recommend combining both: one dedicated 5-minute session per day for strength building, plus a quick 60-second lung activation before every intense training session.
You'll find detailed pre-workout and post-workout breathing protocols in our free e-book included with your OXYFIT Breath Trainer.
Where is the scientific research?
We have a page of medical journals on the benefits of using the OXYFIT™ Breath Trainer, you can find this here.
How long does shipping take?
Order Processing Time: 1-5 business days.
For shipments to the United States: 4 - 13 days.
International deliveries: Please allow approximately 4 - 17 days.
How can I track my order?
You'll receive emails with tracking links and shipping updates. You can also check our tracking page here.
How can i exchange or fix my order ?
If you want to setup an exchange or change your order, submit an email describing your issue here (refer to refund policy for more).
Notice
⚠️ Beware of copies and cheap imitations
OXYFIT™ is exclusively sold through our official website only. We do not authorize sales through third-party marketplaces, auction sites, or unauthorized retailers.
Products sold elsewhere are not manufactured by OXYFIT and likely use inferior materials and untested resistance levels that cannot deliver the results our customers expect.
Only authentic OXYFIT devices feature scientifically-validated resistance stages tested on professional athletes and premium-grade materials engineered for long-term durability.
To ensure you receive genuine OXYFIT with our full warranty and support, purchase only from oxyfit.store
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