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1 vote
Why did people's blood flow

improve in the study?
+) They exercised for a long time.
They ate oxygen-rich foods.
They laughed at a funny video,

2 Answers

10 votes

Answer:

they laugh at a funny video.

Step-by-step explanation:

User Boiler Bill
by
4.2k points
4 votes

Answer:they laughed at funny video

Step-by-step explanation:

User Stafox
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