Fight sleepless nights without resorting to the addictive'magic' of pills. Jade Wu highlights everything that happens in our body, when we think we are doing nothing.

"It's actually a very beautiful process, the brain does a lot of really interesting things," she says. Wu has written the book Hello, Sleep (Paidós), with which he challenges all those who cannot sleep regularly to recover the healthy habit of a good night's rest. But there is a basic rule: no drugs.