Breathing valves are an improvement to functionality and effectivity, only. A breathing valve is beneficial to avoid building moist and, most importantly, improve your exhaling capability. Sometimes it even can help reduce the fog on your eye glasses. Generally though, the breathing valve has limited functionality because most of the face mask users complain about difficulty breathing in. But a breathing valve won’t help you with this, to say the least. The only upside from a breathing valve is to help you ease the pain of exhaling.
Health though should never be impressed by the looks (good or bad) but rather by its effectiveness. And to make a long story short: a breathing valve is an effective tool to help you exhale easier and reduce some of the moist that can build up inside your mask.
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