The heart pumps blood through the body to provide nutrients and remove waste from the body's tissues, according to Gary Thibodeau and Kevin Patton in their book, "Structure and Function of the Body." The body requires more nutrients and produces more wastes as you exercise. Your body reacts to these and other changes by increasing the speed at which your heart beats.
Read more: http://www.livestrong.com/article/131922-why-does-your-heart-beat-fast-when-you-exercise/#ixzz1PABLI4LH
Because more oxygen has to be supplied to the muscles in order for respiration to take place (glucose to energy), or else anaerobic respiration takes place but this creates an oxygen debt and you get cramp.
Your heart pumps blood to all of your cells. Blood contains oxygen and nutrients. When you exercise, your cells use up oxygen and nutrients to get energy. The heart starts beating faster to pump more blood to the cells and make up that lost energy.
Because you are working your body harder than usual, your heart and other functions need to keep up with the pace. Your blood needs to get more oxygen up to the brain.
It pumps more blood and to make the blood pump it has to beat . If you were resting it would beat slower
While training, you are doing a lot of cardio workouts. Your heart beats fast because its pumping more blood because you are using alot of energy.
When you exercise, the muscle needs a lot of oxygen. The red blood cells carry oxygen. The faster your heart beats, the faster oxygen gets to those muscles.
The nervous system causes the heart to beat faster when you exercise. It itself is not an organ but a system.
No, the heart beats faster during exercise. The liver doesn't beat at all.
because the blood system is working harder
As you exercise, the muscles need more oxygen to work. The heart beats faster to get the oxygenated blood from the lungs to the muscles. The harder you exercise, the more oxygen the muscles need, the faster the heart beats.
Your heart starts to beat at faster rate. The heart rate may go up to 180 beats per minute.
strength training
because when you exercise your muscles require more oxygen so your heart will beat faster to get the oxygen to the mucsles. since your blood goes through the lungs and your heart is beating faster you must breathe faster to get a sufficient amount of oxygen.
It's not good at all.
because when you move you need more and more blood so your heart has to beat even faster
the more you exercise, the faster your heart beat is. this type of exercise is called cardiovascular exercise. (cardio for short) this strengthens your heartbeat. exercise makes the heartbeat faster because for example: the faster you run, do you notice you panting? your body needs all the oxygen it can get when exercising.
You can infer that your (healthy) heart is beating faster to compensate for the extra effort your body is making during physical exercise. Once the exercise is over, the time the heart takes to become relaxed and to return to a normal resting beat is a good indication of the state of the health of your heart.
The more you exercise - the more oxygen your body's muscles need. In order for your heart to supply more oxygen - it must beat faster.