Kissing can burn calories. Studies have found that kissing can burn 2-6 calories per minute. If it is a French kiss, it can burn up to 26 calories per minute, because French kiss is suitable for all muscles of the face. AndréaDemirjian said that kissing can burn some calories, although it is not better than exercising in the gym. The researchers also said that kissing uses facial muscles to help keep the face firm.

It can reduce anxiety. Kissing can reduce the stress hormone cortisol and increase the level of serotonin, a compound responsible for maintaining emotional balance. Kissing has also been proved to have similar benefits to meditation, mainly because it can release oxytocin. Oxytocin can play a psychological buffering role and make people feel calm.

Kissing can relieve pain. A study in Germany shows that the more passionate a kiss is, the endorphins secreted by the human body due to stimulation can play the role of painkillers. Saliva produced in the process of kissing will automatically produce antibiotics, which has an anesthetic effect and makes people temporarily forget the sorrow.

Kissing can eliminate hiccups. Because kissing can relieve spasms, when two people devote themselves to kissing, they can quickly eliminate hiccups.