The United States Army has discovered by repeated test that even young men - mem toughen by a years of army training. Can march better and hold longer of they throw down their packs and rest 10 minutes of every hour. So army forced to do just same.

       Your Heart is just same as U.S. Army. Your heart pumps enough blood to your body everyday to fill a railway tank car. It exerts enough energy twenty four hours to shovel twenty tonnes of coal onto a platform three feet high. Is does this incredible amout of work for fifty, seventy or ninty years. How can it stand it? Dr. Walter B Cannon of Harvard Medical School explained to me. He said," Most of us have idea that heart is working all the time. As the matter of fact, it take rest for sometime after each contraction. When beating at a rate of seventy pulses per minute, the heart is actually working nine hours out of twenty four. In this aggregate, its rest period is total fifteen hours per day."

       During World War 2, Winston Churchill, in his late sixties and early seventies, was able to works sixteen hours a day. Year after years, directing a war efforts of the British Empire. A phenomenal record. His secret? He work in a bed everyday untill eleven o' clock, reading reports, dictating orders, making telephone calls and holding important conferences. After lunch he went to the bed and again sleeps for an hour. In the evening he went to the bad again and slees for two hours before having dinner at eight. He didn't cure fatigue. He didn't have to cure it. He prevented it. Because he rested frequently. He was able to work on freshly through out whole midnight.

                                               - By Dale Carnegie