Researchers from John Moores University in the UK tested the effects of afternoon napping on sleep-deprived people. The subjects napped for half an hour just after lunch and then researchers measured their alertness. There have been numerous studies into the effects of power napping, but this one measured heart rates and reflexes as opposed to surveying participants. As per their hypothesis, alertness was significantly higher compared to the non-nappers.

From The complete guide to sleeping at work

Sleep plays an important role in the brain’s ability to consolidate learning when two new potentially competing tasks are learned in the same day, research at the University of Chicago demonstrates.

Other studies have shown that sleep consolidates learning for a new task. The new study, which measured starlings’ ability to recognize new songs, shows that learning a second task can undermine the performance of a previously learned task. But this study is the first to show that a good night’s sleep helps the brain retain both new memories.New research from the University of Chicago