The word ´doctor´ here refers to the one on call inside our body.
He works 24 hours a day to keep us healthy. When we catch a cold, he creates a river of mucus to carry the bacteria out of our body. When our cold settles in our chest and our lungs get congested, he makes us cough in order to rid our lungs of the congestion. When we get a fever, it is an indication that he is fighting off the infection. If we eat something that does not agree with our body, our doctor makes us vomit to rid our body of the culprit.
When our doctor senses abnormal cells, he immediately begins to encapsulate the suspected cells and forms a tumor. Even when a tiny splinter is detected, in less than a few hours, our doctor forces it out. As we sleep, our doctor continues to work, cleansing our body and getting us ready to fight another day.
If you want to keep your doctor in tip-top condition, give him plenty of water, fresh fruits, vegetables, proper nutrition and exercise. Remember, your doctor has to work harder than ever these days. We must give him all the help he needs to keep us healthy. (If you think about it, this is the only doctor in the world who can actually cure you)