Internet - Root Cause of Sleep Debt

The internet is causing B3 to have sleep debt.  He keep saying it is his break time and the break time quickly stretch to hours.  Then in the evening to catch up with his homework, he will stay up late.  He has to get up early in the morning to go to school.  It is a worrying habit.  He does not know nor want to understand the sleep debt can cause health issues as well as deterioration in psychological performance.