When the country went into COVID lockdown, gyms and workout studios were forced shut.
Many Australians turned to running to keep fit, and became addicted to the high.
The popularity is clear, with the Sydney Marathon seeing 33,000 people crossing the line this year.
However, now health professionals are warning runners that there is another side to the sport that they should be aware of.
Bone stress injuries, which is a reaction in the bone from repeated overloading, are on the rise.
But if left untreated, the pain can turn severe and result in stress fractures.
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