Waist workout with weights to burn abdominal fat and get a flat stomach. Dumbbell exercises to reduce waist and tummy fast at home. Obliques workout to get a perfect and slim waist. Calorie Burn: 94 - 156. Frequency: do the workout 3 times a week to get instant benefits. Fitness Workout Videos by Lumowell (It is of prime importance to consult your doctor before starting these training exercises).