When was the last time you had a hearty laugh with your friends, family or colleagues? If you can't remember, you have not idea what you are missing. Laughing can help you relax, reduce stress and prevent us from getting anxious. It is also one of the natural ways to boost immunity and fight diseases. Also, if you are on a weight loss programme, it may help you burn some extra calories too. Pallavi Joshi, Consultant Psychologist, Sri Balaji Action Medical Institute, New Delhi talks about all the health benefits of laughing.