Any type of exitement triggers the primative 'fight or flight'? situation in us all. Adrenalin is pumped into the blood stream in anticipation of either, the increased heart rate is part of it.
Heart beat increases during exercise, fear, nervousness, excitement but only for a short time. Neil Armstrong when landed on moon his heartbeats were recorded as 156 times per minute.
The adrenaline level in your body increases causing you hear to beat faster and the blood flow to get stronger
Alarm reaction phase
Fear causes the release of adrenaline, also known as epinephrine, which has several physiological effects on the body including heart rate.
Caffeine is a drug that stimulates the body and causes increased amounts of stimulatory neurotransmitters to be released. At high levels of caffeine consumption it can and has been linked to restlessness, insomnia and anxiety, this therefore causes raised stress and blood pressure, thus, increasing the heart rate.
If your heart rate increases because of adrenaline (related to your emotional state) that is unlikely to kill you. There are some conditions, particularly ventricular fibrillation, in which increased heart rate can kill you, but in most forms of sickness, increased heart rate is not dangerous.
Increasing heart rate does not increase stroke volume. At first, increasing exertion increases both heart rate and stroke volume. As the heart rate increases, the time spent in diastole decreases, so there is less time for the ventricles to fill with blood. The stroke volume therefore stops increasing, and as the heart rate approaches the maximum heart rate the stroke volume may begin to decrease.
Increased Heart Rate
because you are also worry or get excited or anything that makes you get excited can speed up your heart rate
Increased blood glucose, decreased GI peristalsis, and increased heart rate and blood pressure.
Alarm reaction phase
Children are growing at faster rate. They need more oxygen for the increased metabolic activities. So the heart rate as well as the respiratory rate of children is higher as compared to adults.
breathing and heart rate increased. breathing and heart rate increased.
Fear causes the release of adrenaline, also known as epinephrine, which has several physiological effects on the body including heart rate.
Vaso-dilation (when your veins expand), increased blood pressure, increased heart rate.
There are many drugs which may cause a slow heart rate. Tramadol only causes a slow heart rate if it has been taken excessively, while pregabalin is known to cause only increased heart rate.
Caffeine is a drug that stimulates the body and causes increased amounts of stimulatory neurotransmitters to be released. At high levels of caffeine consumption it can and has been linked to restlessness, insomnia and anxiety, this therefore causes raised stress and blood pressure, thus, increasing the heart rate.
The only way it would affect your heart rate is if you got excited or nervous, which would raise your heart rate.
Increased heart rate and increased stroke volume