I chose this as my first one because It has a large amount of information about sleep deprivation and goes into details into it.
This is my second one because it has some information about the subject and is from a reliable source.
This is my third one because it is not completely on youth so it doesn't fit completely to the subject but is still related to the subject.
Yawning and drowsiness are not the only signs that a student is getting too little sleep. Other symptoms put forward by research include hyperactivity, crankiness, impulsiveness, and a short attention