I am training for track and I run the 800m and mile events. On off season I'm looking to train to become ahead of the game next season. My question is, is if the Elevation Training Mask will help me improve physically. Resistance in air intake, is it a good thing or bad thing for runners? If anyone has tried these masks and can tell me their review on it it will help me. If you don't know what I am talking about here is a link.
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