Study says that a number of young people dying from heart attacks has grown recent years. Heart attacks causing people to pass away while exercising is another recent trend that has been observed.Exercise is generally thought to be helpful for the heart, but abrupt, intensive workouts can be harmful. Exercise without a warm-up or utilising a treadmill while experiencing symptoms like chest pain, dizziness, shortness, etc. can increase the chance of getting a heart attack.Why do heart attacks happenA heart attack happens when the coronary arteries that provide blood to the heart muscle suddenly get blocked, a heart attack results. However, its a popular misperception that blockages in arteries are caused by deposits of fat (lipids, cholesterol), cells, and other substances, much like obstructions in home plumbing.What precisely causes obstructionsThe endothelial cell barrier that protects the arterys lining from cells and cholesterol particles is breached, causing blockages. As a result, there is a bulge, or pimple, on the artery wall. Plaque or stenosis are terms for this. The plaque need not intrude into the artery it may also do so. Such obstructions within the coronary artery begin to dissolve and rupture.There could be several reasons that contributes to the unfortunate incident. Heart attack while exercising on treadmills can actually happen for many reasons. Here are some of them:Underlying heart conditionsThe existence of underlying heart diseases, such as coronary artery disease (CAD), which causes the blood arteries supplying the heart muscle to narrow, is one of the main causes. Your heart needs to work harder when you exercise on a treadmill, and if there is decreased blood flow because of blockages in these veins, it might result in a heart attack.Pushing too much effortPushing too much hard to exercise, may result in stress or fatigue, which puts pressure on heart if you are not regular to physical exercise. This may abrupt heart attack.No warm-upBefore engaging in intense physical activity, improper warming up might strain the heart. Sudden, intense exercise can quickly raise heart rate and blood pressure, which may be too much for some people to tolerate, especially if they already have heart conditions.DehydrationInsufficient hydration can cause blood to become thicker, which makes it more difficult for the heart to pump and may lead to cardiac arrest.Improper technique and lack of supervisionExcessive speed or wrong posture while using a treadmill can strain the heart and cause injury. Also, it can be dangerous to use a treadmill alone if there is no one around who can help in an emergency.According to the experts, before starting off with a new fitness regime, people should speak with an to lower the risk of heart attacks while using a treadmill. They should also start out cautiously and build up their intensity over time, drink plenty of water, and pay attention to any warning signs their bodies may give them.