SPEND $100.LIFETIME APP+ FREE GIFT.
Respiratory trainer + lifetime access to the RESFIT app. No subscriptions. +35% lung capacity in 4 weeks.
RS-Resfit Performance
Stronger Breathing. Better Endurance.
By training them with resistance, you can improve endurance, oxygen intake, and breathing strength — all with just a few minutes of daily training.
Best Seller
Resfit Breathing Trainer
6 Reasons To Start Today
Tap each segment to explore what RESFIT does for your body and performance.
Used By Athletes Worldwide
Train In Any Sport
Best Seller
Used by cyclists, runners, swimmers and elite athletes worldwide to improve breathing performance.
Shop NowTRAIN HARDER
RESFIT™ Dual Knee Strap - Patella Support
RESFIT™ Compression Running Socks
RESFIT™ Training Mask - Athlete Pro
RESFIT™ Unisex Flexibility Straps - Yoga & Stretching
RESFIT™ Thermal Face Guard - Windproof Fleece Sports Mask
RESFIT™ Sport Waist Trainer Belt
RESFIT™ Breathing Trainer - Cardio Edition
RESFIT™ Case
RESFIT™ Mouth Guard Pro Series - 2 Pack
RESFIT™ Posture Corrector
RESFIT™ Winter Sports Balaclava with Air-Filter Protection
RESFIT™ Sauna T-Shirt - Neoprene Layer System
RESFIT™ Swimming Goggles PRO - Anti-Fog Racing Lens
RESFIT™ Boxing Dumbbells - Speed & Power Training
RESFIT™ Jaw Toner Facial Trainer AIR 2.0
RESFIT™ Protective Calf Sleeve - Impact Defender
RESFIT™ Silicone Ear Plugs - Sleep & Swim Protection
RESFIT™ Advanced Compression Socks
RESFIT™ Mouth Tape for Sleep
RESFIT™ Sport & Night Nasal Strips
Real Results. Real People.
Join Based on 2,400+ verified reviewsI noticed a real difference in my breathing control during long runs within the first two weeks. I was skeptical at first, but the progressive resistance levels made it easy to build up. Now it's part of my daily warmup — I won't train without it.
I bought it without expectations, but I was surprised; my cardio improved and now I perform much better in my matches.
As a competitive cyclist, breathing efficiency is everything. This device helped me push harder on climbs without burning out.
Used it for 30 days consistently. My recovery between sets is noticeably faster and I don't gas out like I used to on long WODs.
My coach noticed I was lasting longer in the second half without dropping pace. Didn't expect this thing to make such a difference.
Breathing is the most underrated part of swimming. This trainer helped me extend my underwater distance and control my rhythm better than ever.
5 minutes a day is nothing, but the results are real. I've been using it for 6 weeks and my high-altitude runs feel completely different.
I bought it for my students and they love it. Great way to build breath awareness and lung capacity outside of class.
In combat sports, your breathing can win or lose a round. This device is now part of my daily training. Simple, effective, worth every dollar.
FAQ
Got Questions
Find quick answers to the most common questions about our product.