Every new parent knows, or learns pretty quickly, that rocking can calm [Q1] ____________________________ when it's time to take a nap. But the benefits of gentle motion may extend past the swaddling stage. Because two new studies show that rocking also helps grown-ups, [Q2] _________________________________, get a good night's sleep. The two research efforts are in the journal Current Biology . What should be no surprise is that movement can be soothing. Think of how many times you've fallen asleep on a train. But can motion really [Q3] _________________, and make for a deeper sleep? To find out, researchers invited 18 healthy volunteers for a sleepover. Aurore Perrault, a sleep researcher at the University of Geneva in Switzerland. "And what we find is actually compared to a stationary night, a whole night of rocking sleep has a beneficial impact. Not only on sleep initiation, which means they fall asleep faster, but also on [Q4] ______________________________, as we saw that they have less micro-awakening during the night." Subjects who rocked also did better on a [Q5] _______________ the next morning than did the stiller sleepers. In the second study, Konstantinos Kompotis, a [Q6] _______________________ at the University of Lausanne, rocked a rack of rodents. "Whether rocking affects sleep in species other than human was never before discussed. So the main questions for our study were [Q7] __________________________________________ and what is the underlying mechanism?" Kompotis placed the mouse cages on a platform that moved from side to side. And though mice were rocked four times faster than their human counterparts - a frequency of one back-and-forth per second, or 1 Hertz, worked best - the results were [Q8] _______________. Additional studies could allow the researchers to identify a new target for treating [Q9] _____________________________, including insomnia. Until then, you might think about adding [Q10] _________________________ to your nighttime routine.7