Walking and cycling speeds can be optimized to reduce the amount of pollution inhaled. Researchers suggest walking 3-6 km/h and cycling 12-20 km/h in urban areas to minimize exposure to harmful pollutants.

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Walking and cycling speeds can be optimized to reduce the amount of pollution inhaled. Researchers suggest walking 3-6 km/h and cycling 12-20 km/h in urban areas to minimize exposure to harmful pollutants.