“But they that wait upon the LORD shall renew their strength; they shall mount up with wings as eagles; they shall run, and not be weary; and they shall walk, and not faint.” Isaiah 40:31.
“Inactivity weakens the system. God made men and women to be active and useful. Nothing can increase the strength of the young like proper exercise of all the muscles in useful labor.” The Health Reformer, February 1, 1871, par. 6.
Exercise helps strengthen the immune system by increasing the infection-fighting white blood cells. It also speeds up metabolism, which assists nature to get rid of unwanted waste, which relieves the burden on the immune system to deal with it.
“Conditioning” exercise is what you need. This the type of exercise that will increase your endurance gradually. You may use three things to help you guide yourself in the intensity that you exercise:
Learn what your safe ten-second pulse rate, calculated to your age, and stay within that range as you exercise.
Exercise to the intensity that you are barely able to carry on a conversation with someone as you exercise.
If you should develop chest pain during exercise, stop at that point. Follow the advice of your physician.
Exercise a minimum of 20-30 minutes at the peak of endurance daily if at all possible, at least every other day. The body forces seem to “escape” from good condition rather easily.
Walking is the best exercise possible. A brisk walk in the open air will invigorate the entire system causing a full and healthful circulation of the blood. Be sure not to overexert yourself. Use a walking stick for stability and for protection against stray dogs. On the first day, walk as far as is comfortable and gradually work up to five miles a day.