If anyone does regular exercise then he will have less probability of heart disease or heart attack than those persons who have a sedentary lifestyle. Exercising 30 minutes or more for 5 days a week allows one to lose extra weight, reduce blood pressure and high cholesterol level.
Regular exercise improves the efficiency of heart muscles which results in the pumping more blood per beat in the arteries. This allows our heart to beat slower and helps in keeping the blood pressure under control. Therefore exercise reduces our risk of heart disease.
This is the zone to aim for when training for endurance. It spurs your body to improve your circulatory system by building new blood vessels and increases your heart and lung capacity. Aiming for 20 to 60 minutes in this zone is believed to give the best fitness training benefits.