The heart and the circulatory system are responsible for moving blood throughout the body. As the heart beats in the chest, it pushes blood out through arteries to nourish cells with oxygen and nutrients. When you are increasing blood flow, the circulatory system pushes more blood throughout your body which causes your heart to beat faster in order to push more blood and nourish your body.
Commensalism is a long-term biological interaction (symbiosis) in which members of one species gain benefits while those of the other species neither benefit nor are harmed.
