Do you have COVID-19 questions? Our scientists have answers.
There is no evidence that the virus can be spread through sweat. However, the virus can be transmitted in places like gyms by other means - through respiratory droplets that pass from person to person or that land on surfaces that multiple people touch, such as gym equipment. It's therefore best to avoid gyms. If you must go, it is important to wash hands, sanitize equipment, and practice social distancing.
References
https://www.nejm.org/doi/10.1056/NEJMc2004973
https://www.cdc.gov/coronavirus/2019-ncov/prepare/transmission.html
Drafted 20 March 2020