Sometimes you need to add some nutrients

IE you can't burn any more of the fats you have without some additional fatty acids your body cannot synthesize (Diablo 3 Gold).

Or you need more carbs to stimulate the insulin cycle.

Regarding exercise; if you are healthy enough the ideal is to exercise until you hit a second wind.

It takes more oxygen to burn sugar than fat. If you left a pan with sugar or syrup in it on the stove, it would eventually scorch and smoke but would not burst into flame. On the other hand, if you leave a pot of oil on the stove it will eventually burst into flame. Why? Because it takes less oxygen for fats to burn than for sugars.

When you first start exercising; your muscles burn sugar stored within the cells as glycogen and circulating in the blood as glucose. This takes a tremendous amount of oxygen. You struggle to breath in enough oxygen, your pulse picks up in an effort to circulate it fast enough to keep up with demand. In time though the glycogen in your muscles runs low, and the sugar in your blood drops to.

At this point two things happen. One is your liver starts converting fats into sugars (Diablo 3 Gold), but this process takes a long time. More importantly your liver secretes an enzyme that lets your muscle cells burn fat directly. So they can take in fat circulating in your blood (and fat cells secrete more to keep the level constant). When this happens you need much less oxygen to keep your muscles running. Suddenly it is easy to breath again and your pulse actually drops. This is called getting your second wind. IT has many benefits, not the least of which is that this enzyme will remain circulating for several hours and your muscles will continue to burn fat instead of sugar.

If you are healthy and not diabetic you can also try the following technique. Many new recruits think that army drill sergeants are sadistic for waking them up at oh dark thirty and making them run and do physical training before breakfast; but there is a logical reason. By exercising before you eat, you do not have a stomach full of carbs so you run through the free sugar in your blood and stored sugar in your muscle tissue much more quickly ; allowing you to reach second wind more quickly and switch over to burning fat.

So two things you can try is to modify the intensity and length of exercise and timing relative to meals.