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Mark sees an attacker approaching him with a knife. during his reaction, he experi-ences increased energy and a faster heart rate. this is caused most directly by

Mark sees an attacker approaching him with a knife. during his reaction, he experi-ences increased energy and a faster heart rate. this is caused most directly by
asked 12.3k views
5 votes
Mark sees an attacker approaching him with a knife. during his reaction, he experi-ences increased energy and a faster heart rate. this is caused most directly by

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User Cameel
by
7.5k points

1 Answer

3 votes
Adrenaline. Pretty sure according to multiple people
answered
User Mutantacule
by
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