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RE: PEAK RESISTANCE - Training mask to regulate air intake while exercising
Lungs capacity and intake of fresh air is equally important as whatever air we intake it will have an effect, fresh air means good for health, however if we will be able to regulate it then it becomes even better and this is really god for people doing exercise in a short stretch.
However I doubt whether it will work for people running in marathon or running like 1 hr or more.
Thank you...steem on that hunt.