Answer
Nicotine.
a race track makes your heart beat faster since you run alot
Exercising
Runing
Because if you have a heart defect then it makes you get out of breathe faster and if you have a hole in your heart wall it also makes you get out of breathe faster.
yes .it makes your heart beat faster and faster which over works the muscles which makes the heart bigger and the heart would be squeeze cos the space provided for the heart is too small
no
If you fix your eyes on the color red, your heart will beat faster.
It makes the heart pump slightly faster
You think probable to nicotine.
Epinephrine and norepinephrine
taking off your shirt
It makes it beat faster.