5. Go for Cardio
While strength training can help you burn calories quickly, cardio is still the king for burning fat. Now with cardio, you might not be able to lose fat in specific areas, your overall body fat is sure to reduce. Running is the best cardio that will help you tighten skin and lose fat. Make sure that you sweat it out every day for at least 15 minutes non-stop at a comfortable pace. This will help to keep arm fat at bay.