Question

why do our heart beats faster when wr are in danger​

Answer 1

Answer:

When in danger, our body releases a fight or flight hormone called adrenaline. Adrenaline make our heart beat faster, so that the blood is pumped faster.

Answer 2

Explanation:

The faster your heart beats, the faster it can get more blood and oxygen to your muscles. And when you feel scared, angry, or excited, your brain also tells your heart to be faster. ... Fear causes the brain to release a chemical called adrenaline (uh-DREN-uh-lin), which speeds up your breathing and heart rate.