“Rhinitis” means inflammation of the nose and nasal membranes. “Vasomotor” means blood vessel forces. The membranes of the nose have an abundant supply of arteries, veins, and capillaries, which have a great capacity for both expansion and constriction. Normally these blood vessels are in a half-constricted, half-open state. But when a person exercises vigorously, his/her hormones of stimulation (., adrenaline) increase. The adrenaline causes constriction or squeezing of the nasal membranes so that the air passages open up and the person breathes more freely.