in many parts of the world, people take naps in the middle of the day.(a nap is a short, daytime period of sleep.) this is especially the case in a warmer climate, where the heat makes work difficult in early afternoon. researchers are now saying that naps are good for everyone in any climate. first of all,a daily nap means a more rested body and mind and many health benefits. in countries where naps are traditional, people tend to suffer less from stress and stress-related problems such as heart disease. another benefit of taking naps is improved job performance. in jobs where public safety is involved,a nap can make an important difference. studies have found, for example, that airplane pilots make fewer mistakes of they take regular naps.