Heart Beat Rate During Exercise - Sport

Your heartbeat is the contraction of your heart to pump blood to your lungs and the rest of your body. Your heart's electrical system determines how fast your heart beats. How the Heart Works - How the Heart Beats | NHLBI, NIH A heart attack occurs when an artery that sends blood and oxygen to the heart is blocked.

Fatty, cholesterol-containing deposits build up over time, forming plaques in the heart's arteries. If a plaque ruptures, a blood clot can form. The clot can block arteries, causing a heart attack. During a heart attack, a lack of blood flow causes the tissue in the heart muscle to die.

heart beat rate during exercise,