The inclusion of 'ennui' in 'Del Revés 2' has sparked curiosity about its meaning and origin. Two experts explain to us its symptoms, extent and advice to cope with it if it appears in our lives.

'Boredom is more common than we can imagine in modern society,' says psychologist Laurence Parnier. 'Feelings of boredom and demotivation are common experiences that can arise at any time,' adds psychologist Christine Lebriez. 'Ennui gained popularity and significance in French culture during the 19th century, with special strength in literature and politics'