Sneaking in 45 minutes of midday nap can help you drop your raised blood pressure levels significantly says a new study presented at the American College of Cardiology. Hypertension is a condition in which the force exerted by blood on your arterial walls is alarmingly high. According to WHO if your blood pressure level is 120/80 mm Hg it is considered as normal. But a reading over 140/90mm Hg is considered as high. Hypertension if not managed on time can increase the size of your heart leading to cardiac failure a fatal condition. Also hypertension can damage the blood vessels