Thetypicalbriefingexercises, likeblowingthefeatherusing a strawtosectorcottonball, helpusbreathein a differentway, butalsostretchingthechestorexercisesthathelpincreasethelungscapacitydoctorssaythemicroclimateinthemind, whichstretchesasfaras 327 m underground, alsohelpspeoplewithpulmonaryproblems.
MagdalenaCrossedSon, a doctorworkingatthemine, explainsthattheairreachestheundergroundroomsthrough a seriesofsaltcorridors, andthankstothis, it's cleanedofpollutantsthatareonthesurface.