Answer:
The answer correct c. They slow heart rate
Answer:
regular exercise just gets your body moving used to moving. it keeps your heart healthy and your muscles healthy. flexibility issues are usually caused when people don't move and don't get their exercise.
Answer:
I would say walk in dark and deserted areas
Explanation:
you have to 'Be Visible'
Wear bright colors when walking in the daytime. When walking at night, wear light-colored clothing and reflective clothing or a reflective vest to be visible. Drivers are often not expecting walkers to be out after dark, and you need to give them every chance to see you, even at street crossings that have crossing signals.
Deoxygenated blood leaves the heart, goes to the lungs, and then re-enters the heart; Deoxygenated blood leaves through the right ventricle through the pulmonary artery. From the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle. Blood is then pumped from the right ventricle through the pulmonary valve and into the main pulmonary artery.