Adrenaline rush?
This phrase "your heart is beating like a drum," is called a simile. It means your heart is beating very fast, excitedly. Something has excited you very much. Often used romantically.
You are probaly excited
it usually just means your pig is scared or excited it is possible your pig has a heart problem but not very likely.
Your heart beats faster do to your nerves needing more blood. Therefore if your nerves get excited from your thoughts then yes your heart will beat faster.
It means the man is excited by the girl! When you're excited, your heart rate speeds up, you sweat a little, maybe even feel a bit light-headed. It's love (or lust, at least). :)
it all depends on how fast the cheetah is going
You're excited, nervous, and/or happy, and ecstatic. It happens when people feel a great affinity for another.
because you are going so fast
because you are going so fast
Abnormally fast heart rate is Tachycardia.
It is called a Irregular heartbeat.
erm a heart attack?