The chemical neurotransmitter, Acetylcholine attaches to what is known as a muscarinic receptor. This brings the body back to "rest and digest", and relaxes it from the "fight or flight" response.
alcohol makes you very clumsy and slow and is a depressant, unlike ecstacy, it will slow down your heart rate.
The pulse is a measure of the heart rate.
If by bike you mean bicycle then: Yes if you increase your speed or the intensity for that matter then your heart rate will also increase.
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.
I presume you mean, "Does caffeine speed up your heart rate?" Then... idk look it up
Yes, neurotransmitters like acetylcholine and norepinephrine can influence the rate of firing of the sinoatrial (SA) node, which is the heart's natural pacemaker. Acetylcholine slows down the firing rate, while norepinephrine speeds it up, thus regulating heart rate.
your heartbeat will slow
The sympathetic nerves speed up the heart rate, while the parasympathetic nerves slow it down.
The nervous system
There are a great number of chemicals that can speed up or slow down the heart rate, as well as chemicals that can change the rhythm of your heart.
No foods will significantly reduce your heart rate. Caffeine may speed it up, but nothing will slow it down.
You can maintain your desired heart rate by wearing a heart rate monitor. These are small electronic devices that usually resemble a wrist watch. The heart rate monitor will display your current heart rate and allow you the opportunity to either speed up or slow down your running pace in order to stay within what your desired heart rate is. If you notice your heart rate is getting higher than desired, slow down, and if it is lower than desired, speed up.
alcohol makes you very clumsy and slow and is a depressant, unlike ecstacy, it will slow down your heart rate.
The pulse is a measure of the heart rate.
Caffine will speed up the heart rate.
The autonomic nervous system consists of the sympathetic and parasympathetic branches that regulate the heart rate. The sympathetic nerves release neurotransmitters such as norepinephrine to increase heart rate, while the parasympathetic nerves release acetylcholine to decrease heart rate.
run