We all need a "Zone 2" day -- a low-impact, low-intensity workout -- once in a while. This is especially true for those who find it hard to skip workouts and often push themselves to the extreme.

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If your treadmill doesn’t look like it belongs on a spaceship, are you even working out? We sent our Deco astronaut to put it to the test. Alex Miranda is at Miami Body Space in Aventura, where ...