https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2442192/

Minor prediction: it will later be discovered that people who are exercising can transmit the Covid-19 virus via exhaled aerosol to distances far beyond 6 feet.

This is due to the fact that the aerosols produced by high pressure exhalation during exercise are probably more particulately numerous (and more widely distributed) than the aerosols produced by people walking and/or breathing at ordinary rates and pressures.