I’m sure this will pique a lot of interest:

Scientists have found a way to turn on deep sleep at will using a machine that magnetically stimulates the brain.

A device worn on the head could in squeeze the benefit of eight hours’ sleep into just two or three hours.

Scientists in the US used a technique called transcranial magnetic stimulation (TMS) to induce slow waves – indicative of the deepest phase of sleep and essential for learning ability and mood, in a group of sleeping volunteers.

A TMS device sends harmless magnetic signals through the scalp and skull and into the brain, where it activates electrical impulses.