Exercise helps to control your weight by using excess calories that otherwise would be stored as fat. your body weight is regulated by the number of calories you eat and use each day. Everything you eat contains calories, and everything you do uses calories, including sleeping, breathing, and digesting food. Any physical activity in addition to what you normally do will use extra calories.
Regular exercise is an important part of effective weight loss and weight maintenance. It also can help prevent several diseases and improve your overall health. It does not matter what type of physical activity you perform--sports, planned exercise, household chores, yard work, or work-related tasks--all are beneficial.
Studies show that even the most inactive people can gain significant health benefits if they accumulate 30 minutes or more of physical activity per day. Research consistently shows that regular physical activity, combined with healthy eating habits, is the most efficient and healthful way to control your weight. Whether you are trying to lose weight or maintain it, you should understand the important role of physical activity and include it in your lifestyle.
Balancing the calories you use through physical activity with the calories you eat will help you achieve your desired weight
a) When you eat more calories than you need to perform your day's activities, your body stores the extra calories and you gain weight b) When you eat fewer calories than you use, your body uses the stored calories and you lose weight. c) When you eat the same amount of calories as your body uses, your weight stays the same.
The benefits of exercising is well documented (and very long). A few to highlight:-
Lowering Cholesterol - Raises HDL ("good" cholesterol) and lower LDL
Diabetes - Lowers excess blood sugar levels, strengthen muscles and heart, improve circulation and reduce stress
High Blood Pressure - reduces level of stress-related chemicals in the bloodstream that constricts arteries and veins, lower resting heart rate and helps reduce blood pressure.