Swimming, cycling, lifting of heavy weights, and ball and racket games are some of the activities individuals should avoid for seven days after receiving their first and second doses of a Covid-19 vaccine, said the Ministry of Health (MOH). The clarification in an MOH advisory on Monday followed an amended recommendation that people should avoid strenuous physical activity after either of their mRNA Covid-19 vaccine doses. An earlier advisory on June 11 recommended that those vaccinated avoid strenuous physical activity for one week after their second dose of an mRNA Covid-19 jab. The latest advisory says competitive sports and physical education classes should also be avoided as they are considered strenuous.