New Delhi, May 3 -- Has your partner, or someone in your family ever told you that you talk in your sleep? If yes, then you are not the only one. Apart from whispering sweet nothings, laughing in sleep is also pretty common. Babies do it often, and so do adults. It can be a brief and quiet laughter, or a loud one. It seems to be amusing, and the good news is that it is usually harmless. Laughing in sleep is usually because of what you dream about. However, sometimes it can be due to a sleep disorder, or a neurological condition. On World Laughter Day, which is celebrated on the first Sunday of May, we tell you all about sleep-laughing or hypnogely.

What are the causes of people laughing in sleep?

Laughing in sleep may be due to the foll...