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SPARTHOS Workout Mask

Trending core trainers & ab machines

Here is another workout mask you can use for high altitude simulation. It can be used to improve your running, cycling, and cardio. The SPARTHOS Workout Mask forces you to take deeper breaths to strengthen your respiratory system.

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The mask has 16 breathing levels, so you can change air flow level easily. Costs under $40 at this time.

[where to get it]

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