The article examines the effect of fine dust on the health of those involved in the gym. The factors characterizing dust are investigated depending on the ranges of breathing height of the participants. A series of measurements is carried out in the gym and further examination using a microscope and a personal computer. The results of the dispersed composition of dust are obtained. The dependence of the diameter of the dust particles on the height has been revealed.

Keywords: fine dust, working area, dispersed composition, aerodynamic characteristics, particle diameter, sports hall