A strong muscle can help lower high blood pressure and reduce the risk of heart attack or stroke.
Exercise allows the heart to pump blood more efficiently, improving blood circulation.
Walking causes calf muscles to contract, circulating more blood from feet to head. Walking helps the lungs develop a greater capacity, easing breathing and improving the entire respiratory system. It also helps tone muscles in legs, thighs, and abdomen. Walking is an effective exercise when you walk briskly for at least 20 minutes at a constant clip of 3 to 4 miles per hour. Heavier individuals will burn more calories than lighter persons.