Cardio Burn

Try to Exercise Empty Stomach
Be it running or any cardio exercise, try doing it before your first meal. This is because your body tends to use fat as the primary energy source. If you are worried about muscle loss, take some Whey Protein, and then start your workouts. Make sure not to take any carbs.

Stay hydrated
Proper hydration is just as important as proper nutrition. It is important to drink an adequate amount of fluid, but also to avoid drinking too much fluid.