The on-demand economy and 24-hour news cycle are causing sleep deprivation, which is affecting productivity, reports the Financial Times.

Do you trust somebody who has been up all night? We encounter many of them: Uber drivers, police officers, doctors. A former UK National Health Service worker who was in charge of doctors’ workloads recently told me about the signs of nocturnal mania he witnessed routinely.

At times he would discover doctors hiding in cupboards to try to snatch some sleep. He recalled driving to house visits with one medic who brought along a pillow, a duvet and a hot water bottle, and instructed to him to go the long way round. Not manic perhaps, but really tired.