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.
When your diaphragm pulls down, it is making room for the lungs to expand. The lungs get bigger with air and pushes the diaphragm down. The diaphragm also lowers the internal air pressure. Outside of your body, the air pressure is greater and you suck in air when you inhale. The air then expands your lungs like two balloons being blown up. When your diaphragm relaxes, it moves up and the cavity inside your body gets smaller.