Taking a nap during daytime can not only refresh you but also lower the risk of heart attack or stroke if taken once or twice in a week found a new study. The impact of napping on heart health has been hotly contested since many of the published studies on the topic have failed to consider napping frequency or focused purely on cardiovascular disease deaths or compared regular nappers with those not opting for a mini siesta. In the study published in the Journal 'Heart' researchers looked at the association between napping frequency and average nap duration and the risk of fatal