Some can be used for more than one. For example, running is good for cardiovascular and respiratory health as well as for endurance and muscle building. If you select the proper activities it is possible to work on more than one goal at a time. Again, ask the expert. If one of your goals is weight loss, you need to recognize that you need to keep food intake and energy output or exercise in a certain proportion.
Exercise calls on stored calories for extra fuel.
It can also increase metabolism during a workout, and can keep your metabolism higher even after your exercising is over. How much exercise depends on the amount and type of exercise you choose to do. A medium-sized adult would have to walk more than 30 miles to burn 3,500 calories, the equivalent on 1 pound of fat. Walking a mile a day for 30 days would achieve the same thing as long as you don't increase your food intake. If you eat 100 calories more a day than your body needs, you will gain approximately 10 pounds in a year.