This asana is actually a confluence of 12 yoga postures, each of which creates a major impact on the abdominal region, along with other areas of the body. The deep breathing during the asana helps in detoxification as well. The bending and stretching help the whole body muscle function and tone. You can start with five rounds, gradually increasing the rounds over time. After each repetition, you can sip a little amount of water. You should relax for 15 seconds before each repetition.
Practicing these yoga asanas regularly would definitely reduce the belly fat and make you look smarter and healthier. However, if you are pregnant or a nursing mother, then you should consult with your doctor, before attempting any type of yoga.