If more than one person is using the system, will we each need our own mask?

The mask may be shared, how­ev­er since the mask is worn snug­ly against the face around the nose and mouth area when exer­cis­ing (like­ly the user will be sweat­ing and breath­ing hard), many peo­ple pre­fer to order indi­vid­ual masks for hygien­ic pur­pos­es.