The reasons why adolescents are not getting sufficient sleep are thought to include delay in circadian rhythm, late night use of electrical devices and consumption of caffeinated beverages.
Ástæður svefnleysis hjá unglingum geta verið meðal annars seinkun á dægursveiflu, raftækjanotkun fram eftir á kvöldin og neysla koffínbættra drykkja.