Indoor, high-intensity fitness classes may help spread the coronavirus
Some states are letting gyms reopen, but there many unanswered questions about if that’s safe
![Fitness class](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/05/051920_ed_fitnessclass_feat.jpg?fit=1028%2C579&ssl=1)
Turbulent air flow caused by intense physical exercise in densely populated sports facilities could help spread the coronavirus, a study finds.
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