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If you could choose either for HIIT, which one, all things being equal?
Personally, the only thing real difference between them I can see is that the Concept 2 requires a bit more skill to use than charging up a hill with your War Face on But I welcome other's views and experiences.
Personally, the only thing real difference between them I can see is that the Concept 2 requires a bit more skill to use than charging up a hill with your War Face on But I welcome other's views and experiences.