Question

Why our heart beat be fast when we get fear

Answer 1

HELLO BUDDY ❤✨

Answer:

When you exercise, your muscles need even more oxygen because they are working harder. The faster your heart beats, the faster it can get more blood and oxygen to your muscles. ... Fear causes the brain to release a chemical called adrenaline (uh-DREN-uh-lin), which speeds up your breathing and heart rate.

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Answer 2

HELLO FRIEND ❤

Answer:

The faster your heart beats, the faster it can get more blood and oxygen to your muscles. ... Fear causes the brain to release a chemical called adrenaline (uh-DREN-uh-lin), which speeds up your breathing and heart rate. The extra oxygen gives you the strength and brain power to fight back—or run away as fast as you can.