When cholesterol clogs arteries to the heart, the body responds by producing tiny blood vessel, called collaterals, to supply blood to the heart. “Scientists have been trying for years to nudge collateral blood vessels to develop and prosper, but without great success. However, you can do it at home without anything more high-tech than a comfortable pair of shoes, reports the Harvard Heart Letter in its January 2008 issue. Growing new collateral blood vessels can ease chest pain (angina), limit heart attack damage, improve survival, and perhaps even offer extra time for emergency therapy in the case of a heart attack. And exercise can boost these blood vessels. Exercise dramatically increases blood flow through the coronary arteries”, (arteries supplying blood to the heart). This study demonstrated that to be effective, you must get 20-30 minutes of exercise several times each week. “When physical exercise is taken, the circulation is quickened. The heart receives blood faster and sends it to the lungs faster. The lungs work more vigorously, furnishing a greater amount of blood, which is sent with stronger power through the entire being. Exercise gives new life and strength to every part of the body.” (Reflecting Christ p.147)