One of the most effective causes of heart attack during sleep is dreams or disturbs sleep. As I found in my case studies lot of people has increases heart beat, even sweat comes during sleep, emotional imbalances during sleep. I mean to say during sleep they face bad dreams. It affects badly on the body, especially on heart, stomach, and bladder etc. So many stressed people face irregular heart beat during wakeup in the morning. It means unavoidable and violent dreams or thoughts are there wondering into mind, during sleep, they didn’t have deep sleep properly. These types of bad dreamers may more get heart attack during sleep. Especially if the dreamer is suffering with diabetes and kidney problem then may have more chances for heart attack during sleep (dreams).
Sudden stressful dreams increases the pumping action and rate of the heart, while at the same time causing the arteries to constrict (narrow). This restricts blood flow to the heart. As I think these actions may be responsible for some cases of acute stress that have been associated with a higher risk for serious heart problems. These problems include heart rhythm abnormalities and heart attacks, and even death in people with heart disease.
Stressful dream appears to impair the clearance of fat molecules in the body, raising blood-cholesterol levels, at least temporarily.
48% sleep disturbance, unusual fatigue – 70%, Shortness of breath – 42%, Indigestion – 39%, and Anxiety – 35% in women have heart attack.
A lot of technique yoga has, for decreasing heart attack during stress related problem. First start with left nostril breathing and thereafter do alternate nostril breathing, ujjai breathing is also very helpful for this stress reduction. In the series of asana; cobra pose, shoulder stand, gomukh asana and ustra asana can helps to reduce stress and heart problems. Chaitanya meditation also provides you normalize emotional imbalances. Let practice this under guidance of expert and experienced guru.