Review on Maximize Your Stamina and Performance with POWERBREATHER Sport by Matt Dyen

I am very grateful for this product. I've been trying to learn how to swim independently for many years, my bottleneck is breathing. I have perfect gestures as long as I can hold my breath and as soon as I try to breathe, when my movements are distorted and I start drinking pool water/sea water/... during freestyle swimming I just get really nervous about breathing. and this breather changes it forever. No more fatigue as I don't get as much CO2 as I used to when using the classic breathing snorkel, so finally no more fear of choking!