Zap! You're asleep

This may be useful, get 4 hours of sleep that is as effective as 8.

A good night’s sleep just takes too long. Scientists may soon be able to cut those eight wasted hours down to three or four—by waving a wand, more or less.

The technique, transcranial magnetic stimulation, involves an electromagnetic coil that emits pulses of skull-penetrating, neuron-activating magnetic energy. Depending on where the wand is and how fast it pulses, TMS can play all kinds of tricks. It can make a thumb twitch, create the illusion of a flash of light, or even treat depression. Neuroscientist Giulio Tononi of the University of Wisconsin set out to see if TMS could switch on certain sleep phases.

I don't think I'd use it though. I enjoy sleep far too much.