Recovered COVID-19 patients practice baduanjin, a fitness routine with a history of 800 years, with medical workers at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China's Hubei province, on March 12, 2020. The site has received over 700 COVID-19 patients and more than 400 patients have been released. [Photo by Su Feng/chinadaily.cm.cn]

Recovered COVID-19 patients practice baduanjin, a fitness routine with a history of 800 years, with medical workers at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China’s Hubei province, on March 12, 2020. [Photo by Zhu Xingxin/chinadaily.cm.cn]

Recovered COVID-19 patients exercise on the terrace at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China's Hubei province, on March 12, 2020. [Photo by Su Feng/chinadaily.cm.cn]

A recovered COVID-19 patient does physical exercises on the terrace at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China’s Hubei province, on March 12, 2020. [Photo by Su Feng/chinadaily.cm.cn]

Recovered COVID-19 patients practice baduanjin, a fitness routine with a history of 800 years, with a medical worker at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China’s Hubei province, on March 12, 2020. The site has received over 700 COVID-19 patients and more than 400 patients have been released. [Photo by Su Feng/chinadaily.cm.cn]

Medical workers take a break at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China's Hubei province, on March 12, 2020. [Photo by Su Feng/chinadaily.cm.cn]

A medical worker does physical exercises during a break at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China's Hubei province, on March 12, 2020. [Photo by Su Feng/chinadaily.cm.cn]

Recovered COVID-19 patients practice baduanjin, a fitness routine with a history of 800 years, with medical workers at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China’s Hubei province, on March 12, 2020. [Photo by Zhu Xingxin/chinadaily.cm.cn]

Recovered COVID-19 patients practice baduanjin, a fitness routine with a history of 800 years, with medical workers at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China’s Hubei province, on March 12, 2020. [Photo by Zhu Xingxin/chinadaily.cm.cn]

Recovered COVID-19 patients practice pose for a photo with a medical worker at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China’s Hubei province, on March 12, 2020. [Photo by Zhu Xingxin/chinadaily.cm.cn]

Recovered COVID-19 patients exercise on the terrace at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China's Hubei province, on March 12, 2020. [Photo by Zhu Xingxin/chinadaily.cm.cn]

Recovered COVID-19 patients and a medical worker exercise at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Central China's Hubei province, on March 12, 2020. [Photo by Zhu Xingxin/chinadaily.cm.cn]