of course. its part of the human body functions.
If a 12 year old has a heart rate of 170 while exercising they should see a doctor immediately. The heart rate is very high so they should go, because its very bad for the child.
You can find information on heart monitors to use while exercising at the following website....www.elitefitness.com/forum/.../heart-rate-monitors-914983.html
No. Caffeine and epinephrine are both stimulants. Caffeine stimulates the Central Nervous System (CNS) while epinephrine (also called adrenaline) stimulates the sympathetic nervous system. These both increase heart rate.
Generally, a normal heart rate for a average adult while resting is 60 to 100 beats per minute. It also depends on if you have any diseases and birth defects.
I wouldn't say it is "Dangerous", just not a good idea. The idea of aerobic exercising is to keep your heart rate at a constant pace for 20 to 30 minutes. When you stop to take your heart rate, your heart rate goes down(contributing to not getting an accurate reading of your heart rate.) Also, after you have finished exercising, you should cool down, because changing your heart rate drastically can be bad for you, because it suddenly changes the amount of oxygen you need, or something like that. Marge answered it better. Read the other question in this section titled "Why would your legs shake badly after exercise?" I thought her answer was good. While exercising, for example jogging, the muscles of the leg help blood return to the heart and lungs (venous return) as they contract around the veins, aiding by squeezing the blood through. While exercising the body requires a certain amount of oxygen delivered to the body at a specific rate for that exercise. If you suddenly stop exercising, venous return is slower as the muscles are no longer helping with the 'squeeze'. Now the heart and lungs can not provide the blood and therefore oxygen to the expectant muscles and head at the required rate. The DANGER is that the jogger may become dizzy, black out, fall over and hit their head etc. In addition to the previous response, blood tends to pool around your extremities when the heart slows down too quickly. This may also lead to lightheadedness, similar to what you feel if you stand abruptly after a long period of sitting.
If a 12 year old has a heart rate of 170 while exercising they should see a doctor immediately. The heart rate is very high so they should go, because its very bad for the child.
I do not think it is normal to suddenly notice an increase in heart rate while sitting down. Usually an increase in heart rate would happen during exercise.. Not while going to sit down, you should go to a doctor to have your heart checked. It also could be because you or the person could be overweight and when you do something that to average size people is a normal thing your body's senses makes it seem like you've been exercising while doing the smallest thing.
You should slow down and unwind after exercising before total rest. Do some stretches or slow down heart rate by slowing down on the exersise. Don't just stop all at once and rest completely.
of course, your supposed to drink water while your exercising
count how many times your heart beats in ten seconds then multiply that number by 6
Yes it does.
It varies from person to person, depending on your age and what condition you are in. About.com has a target heart rate calculator that you can use. http://exercise.about.com/cs/fitnesstools/l/bl_THR.htm
while resting our heart doesn't have to work as hard but while we are exercising that causes more blood to pump through our body causing it to beat faster than usual
You can find information on heart monitors to use while exercising at the following website....www.elitefitness.com/forum/.../heart-rate-monitors-914983.html
Tachycardia is an increase in heart rate while tachypnea is an increase in the rate of breathing
This model is not resistant to sweat. It should not be used while exercising.
While actually exercising will cause your pulse rate to increase, when you are fitter your resting rate will be lower than before.