There are many truths about health and fitness, and some lies that are not really untrue. The reason is that each person's body reacts differently to exercise. So what is true for one person may not be necessarily true for others, or some percentage of other people. On a case by case basis everyone has to deal with questionable truths and information. A little bit a research can help you uncover a lot of information and that is the real clue to getting the truth about health and fitness. If the information is less than true, you should do some research.