It has so far, for every human being who has died.
Sneezing stops heart rate. It is scientifically proven!
yes
A lot of agents can affect heart rate, but let's say... Cocaine (accelerates the heart rate) Adrenaline (accelerates the heart rate) Potassium chloride (reduces it to zero - this is the chemical they use in executions to make the heart stop)
Stop altogether, no. There are some that have some degree of control however.
stop watch
yes
It goes up, or if your really out of shape it can stop.
Like all hearts, it will stop beating when the animal dies.
Yes it can your heart rate can not only increase by exercising it also increases by how excited or happy and especially when you get scared. Have you ever watched a scary movie then felt your heart.
The lowest heart rate ever recorded was spanish cyclist Miguel Indurain, with a resting heart rate of 28 beats per minute.
heart rate of 60 beats per minute
your hart would stop and you would die