In Perfectly imperfect (Universo), writer and screenwriter Carla Gracia constructs a fictional narrative to address very real issues: life with a child with autism spectrum disorder (ASD), the lack of shared responsibility in parenting, and the complexity of family relationships. A theatrical adaptation is already in preparation. And this September, she will publish the children's book. The Adventures of Capybara and His Friends.

"Even if we sleep badly, it is important to get up at the same time so as not to fool the brain about when it is day and when it is night", explains Sandra Giménez, a doctor in the sleep unit of the Hospital de Sant Pau. "We are a 24-hour clock, and we can't make it work differently on weekdays and weekends", says Odile Romero, head of the sleep unit at Vall d'Hebron Hospital.

The writer Vladimir Nabokov was horrified at having to forcibly lose consciousness eight hours every day. Without sleep, however, he would not have written anything resembling a masterpiece such as Pale Fire, because his brain would not have been capable of it. Sleep is essential for the proper functioning of the brain. At the same time, the brain regulates when we fall asleep and when we wake up by means of a hormone called hypocretin. Lluís de Lecea, professor of psychiatry and behavioural sciences at Stanford University, is one of the scientists who discovered it.

Sleep is a natural and necessary state of rest of the body and mind in which consciousness decreases and sensory activity is relatively inhibited. The response to external stimuli is minimal, at least the mild ones, however, despite the state of relative unconsciousness, the level of brain activity remains high. In fact, this is the main difference between sleep and other states of unconsciousness, such as coma. All vertebrates sleep and at least some insects, such as flies and ants, are known to sleep, indicating that sleep is of transcendental importance for the life of animals. However, not all animals sleep in the same way.