The next time you yawn in front of others, be a bit careful, for a new study says that yawning is a sign of sexual attraction rather than a desire to sleep.

Scientists have claimed at the first International Conference on Yawning held in Paris that the act can actually demonstrate a range of emotions, including interest, stress and even wanting to have sex. However, they are not yet able to differentiate between a yawn that signifies erotic arousal and simply the need to catch some sleep, The Daily Telegraph reported.