Key points from article :
You breath more during exercise – so what if the air you’re breathing is polluted?
Cambridge University have used computer simulations to balance the harm and benefits.
In a typical city you’d have to cycle for 7 hours, or walk 16, in a day before the air pollution cancelled out the benefit of exercise.
Air pollution contributes to 40,000 early deaths each year in the UK.
Regular exercise reduces the risk of diabetes, heart disease, and several cancers.
Dr James Woodcock added: “It is not an argument for inaction in combating pollution.”
The study was published in the Preventive Medicine journal.
