The World Health Organization does not recommend wearing a face mask during physical exercises as it impairs breathing.
Besides, the mask becomes sodden with sweat, and becomes a good ground for microorganisms, reads the WHO web site.
The organization recommends preserving at least one-meter distance during the physical exercises to minimize the risk of contamination.
At the same time, the organization explains that the continuous use of medical masks does not cause the intoxication by CO2 and the oxygen insufficiency, though it is necessary to change the masks several times a day.
