Why did respiratory rate increase and decrease as your heart rate increased and decreased?

Respiratory rate often increases with heart rate to meet the heightened oxygen demand of the body during physical activity or stress, facilitating improved gas exchange and carbon dioxide removal. Conversely, when heart rate decreases, such as during rest or relaxation, the body's oxygen needs diminish, leading to a decrease in respiratory rate. This coordination between heart and respiratory rates helps maintain homeostasis and ensures efficient oxygen delivery to tissues.