• When you become super flexible because you got yoga classes for free with your custom frame you can reach your toes and therefore can lower the stack.
    I guess.

  • I think in bike fit terms anything to do with bar position (lower or longer) is 'reach' but in bike-geo terms is stack and reach.

  • Or when your gut starts getting in the way because you got pastries for free at work and you can no longer see your toes and therefore can increase the stack.
    I guess.

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