New York's Village Halloween Parade is an annual holiday parade and street pageant presented on the night of every Halloween in New York City's Greenwich Village.
It Can Trigger Cardiovascular Issues. The cold air makes your body work overtime, especially the lungs and heart, because they work in unison to keep that warm blood circulating without skipping a beat. This can cause blood pressure to rise, as blood vessels constrict so they can get back into the heart.
It is not known to cause harm in a healthy lung, but can trigger an attack of bronchospasm in someone with asthma. Many people worry that the lung tissue will freeze in cold air, but the extensive network of blood flow through the lung tissue seems to prevent that from happening. As best we can tell, the lung will tolerate extremely cold temperatures without cold damage.