yes it will. intervals improve your aerobic fitness level significantly and when that happens you're able to do more work and burn more calories (given the same amount of time and/or distance). for instance say you can only run on the treadmill at 6 mph. in 30 minutes at that speed and if you weigh 150 pounds you'll run 3 miles and burn 300 calories (100 calories per mile for a 150-pound person). however if you're more fit and can run at 6. 5 mph then in 30 minutes you'll run 3. 25 miles and burn more calories. and as a bonus you'll burn more fat as a result of your improved fitness. keep in mind that intervals are tough and could potentially increase your appetite. if that happens drink lots of water when you do them and have a snack with carbs and protein (and a little fat is ok) 20-30 minutes before you train. energy bars or something like a bagel with peanut butter are good choices. snacking before a workout usually decreases appetite afterward. you can also experiment with a small snack after your workout.
will interval training help me burn more calories and more fat?