Controllable pair option on or off

Hi there

Can someone explain the difference when we ride with the controllable pair option on or off please?
What is the best option when we ride (not a workout)


If you have a smart trainer, typically you would leave it on. With it turned on, Zwift will tell the trainer to increase or decrease resistance based on the gradient of the road. For example, when you reach an incline or a hill, the resistance will go up just like if does in real life. The same for a downhill, when the gradient goes negative, you will feel the resistance lessen.

When in workout mode, Zwift also controls the trainer resistance to maintain the target wattage. Gradients are irrelevant in workout mode.

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Thanks Lin