EXECUTIVES who take a power nap in the office are on to something. Getting a little shut-eye during the working day does help us perform better, suggesting that everyone should be allowed to recharge their batteries with a quick siesta.
It is well known that a good night’s sleep helps us consolidate what we learned the previous day. But the benefits of a quick daytime kip were less clear. So Sara Mednick of Harvard University and her team asked 30 volunteers to do an exhausting task, involving identifying the orientation of a bar flashed in the corner of a screen. A third of the group got…
