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An abnormal EKG can mean many things. Sometimes an EKG abnormality is a normal variation of a heart's rhythm, which does not affect your health. Other times, an abnormal EKG can signal a medical emergency, such as a myocardial infarction (heart attack) or a dangerous arrhythmia.

A study by consultancy firm Mindlab International at the University of Sussex showed that reading reduces stress. Subjects only needed to read, silently, for six minutes to slow down the heart rate and ease tension in the muscles. In fact it got subjects to stress levels lower than before they started.

In terms of fiction or non-fiction, there are endless stories that can both broaden your understanding of the world or help you get through a sticking point in your life. Those who read have been known to have more finely-tuned brains than those who prefer more passive activities, so anyone hoping to improve their mind both psychologically and cogn

Those who read tend to have a more varied range of words to express how they feel and to get their point across. This increases exponentially with the more volumes you consume, giving you a higher level of vocabulary to use in everyday life.

When you read a book, you have to remember an assortment of characters, their backgrounds, ambitions, history, and nuances, as well as the various arcs and sub-plots that weave their way through every story. That's a fair bit to remember, but brains are marvellous things and can remember these things with relative ease. Amazingly enough, every new

Normal values for waves and intervals are as follows: 1) RR interval: 0.6-1.2 seconds. 2) P wave: 80 milliseconds. 3) PR interval: 120-200 milliseconds. 4) PR segment: 50-120 milliseconds. 5) QRS complex: 80-100 milliseconds.