Traditional sleeping pills tend to reduce vital REM sleep, which may make users wake feeling less rested and clear-headed than they should, says the Swiss drug company Actelion.
They've now developed a new drug that actually increases the REM phase, multiplying its benefits on memory and well-being.
And they say it "shows no sign of being addictive or of losing its effect over time."
Lab rats can enjoy the benefits now; the rest of us will have to wait until about 2012.
