The numbers on your scale do not indicate whether you are fit or fat. Far more significant than your total body weight is the composition of your body tissue. If a man's fatty tissue is bigger than 14% up to 15% of his body mass, or if a woman's is more than 20% to 22%, he or she is overweight, or more precisely, over-fat. A small amount of fat is needed for padding the internal organs and as insulation under the skin. Excess fat leads to such diseases as diabetes, high blood pressure, coronary artery disease, and gallbladder problems.
The problem with most people who want to lose weight is that they concentrate more on getting those numbers lower than on getting healthy. What happens next is that they strive harder to achieve a lower weight, according to the "ever reliable" results of the scale. It would be more important to think of the human body as a heat-exchange engine that works on the basic principles of energy physics. The caloric balance equals the total calorie intake minus the total calorie expenditure.
Some of the calories people ingest are used for basal metabolism. As people get old, their bodies require fewer calories for this basic upkeep. Some calories are excreted as waste products. Some go into "work metabolism," the energy expenditure required for any physical activity. If people take in more calories than are used by these functions, there is a definite caloric excess. By the laws of physics, energy is transformed rather than destroyed. In this case, each excess of 3,500 calories is changed into a pound of fat.
If people want to reverse this process, they have to burn up 3,500 calories to lose a single pound. When you think of fighting fat with exercise, you probably think of hours of hard, sweaty exertion. If this is the case, then, you will not get very far. This is because people who are into losing more weight by exerting more effort tend to get bored quickly.
Because experts contend that when people exert more effort than what they are capable of doing, it creates boredom. They give up, stop doing their routine exercises, and end up ruining their efforts. It also creates a physical "boredom" because your body gets used to your exercise routines, and doesn't need to work as hard, thereby lessening the effectiveness of your workouts. Now, you might ask, "What could be done instead," The answer: cross training.