Fat burning exercises are slow, aerobic, long duration types of exercise that involve most of major muscle groups. Your body will burn a higher percentage of calories from fat with lower intensity cardio exercises.
Fat burning exercises include walking, jogging, running, elliptical exercise trainer workouts, cycling and swimming. The key factor to keep in mind is more muscle groups you use, more fat you'll burn.
Different type of exercises will burn more sugar rather than burning fat. Sugar burning exercises involve brief spurts of movement followed by rest which results in more sugar that is used for fuel instead of fat.
Sugar burning exercises include sprinting, tennis, racquetball, basketball, and golf. While these are great sports that benefit your overall fitness condition, they are different type of exercises that will not burn as much fat like fat burning exercises will.
To burn fat effectively, exercise at a moderate pace for a longer period of time. The residual effect of this type of aerobic exercise gives you most benefits.
These aerobic fat burning exercises increase your metabolism which means you'll burn calories long after you exercise. People who exercise on a regular basis develop more fat burning enzymes than people who don't exercise at all.