This document provides tips for keeping your circulatory and respiratory systems healthy. It recommends exercising daily and getting enough rest to keep blood circulating well. It also says to avoid extreme emotions that could harm the circulatory system. For the respiratory system, it suggests regular exercise to strengthen the lungs and avoiding putting harmful substances in the lungs. Aerobic exercise in particular allows the lungs to take in more oxygen. Overall exercising regularly provides benefits like increased testosterone, brain and willpower boosts, stress relief, and physical attractiveness.