When u have adrenaline your heart starts pumping and you get butterflies. Most of the time you can’t do it because you’re scared. But sometimes you do something stupid like jump off a house or bridge. Adrenaline can help you get over lots of stuff like your first race or jumping out of a plane. It’s helpful in lots in ways. It helps u when you’re scared if u didn’t have it you wouldn’t have the guts to do lots of stuff.