Assertion: yawning | /r/Causes | increase
Facets:
value: in heart rate
type: OTHER
value: in the blood
type: OTHER
value: in blood pressure
type: OTHER
value: in oxygen
type: OTHER
Source sentences:
text: These new theories focused on the circulatory system, suggesting that yawning causes an increase in blood pressure, heart rate and oxygen in the blood, which in turn improves motor function and alertness.