Huffington is never so impolite as to mention that capitalism, which has done well by her and made her a multimillionaire, may be to blame for keeping people working long, sleepless hours. She prefers proposing solutions to diagnosing causes. She tells you to leave your smartphone outside your bedroom, to have warm baths, to disengage. Don’t tackle work emails after a certain time.

Her solutions have the convenient consequence of making you a better worker for your employers, without actually raising your material standard of living. After all, she writes, “it would actually be better for business if employees called in tired, got a little more sleep, and then came in a bit late, rather than call in sick a few days later or, worse, show up sick, dragging themselves through the day while infecting others.” Her advice to her fellow bosses is purely expedient: if the worker drones rest, more labor can be wrung out of them.

Ultimately, Sleep Revolution tells us very little about what we need to know to get more sleep. Huffington’s slender thesis (“Sleep more so you can make more money”) is covered fully in her 4-minute TED talk on the subject, and solutions to sleeplessness are available in innumerable resources on the internet. The book is less important for what it says and more for what it reveals about Huffington’s place in enabling a particularly rapacious form of capitalism, one which first deprives people of sleep and then sells them the methods by which they might regain some of it.