Masks do not need to be worn during "vigorous intensity physical activity," the WHO has said.<br />The WHO, or the World Health Organization, made updated guidelines, citing new research.<br />The research says wearing masks can have negative effects, reports Business Insider.<br />The WHO said other prevention measures, like distancing and ventilation, need to be in place.<br />This includes indoor exercise venues or these venues should temporarily close.<br />Some experts disagree with the guidance, however, citing that masks don't impair breathing.
