HIIT is High Intensity Interval Training, google it and you can come up with dozens of workouts or go to bodybuilding.com and search HIIT, its amazing for fat burning, faster results than cardio alone
CLA is Conjugated Linoleic Acid, its a natural supplement (NOT fat burner, that wont mess with your heart rate like caffiene and willowbark and ephedra) , studies have found its especially helpful with abdominal fat. Its a naturally occurring fatty acid found in animal and dairy fats such as beef, dairy products, poultry, eggs and corn oil. The human intestine produces CLA naturally from linoleic acid.