Dear Sage, some parents threaten their kids with spanking if they want their kids to toe the line. That kind of threat hardly works on you. But this one does:
Sage: Dad I want to watch TV
Dad: (eyes fixed on the screen watching) I'm turning this off after 5 minutes. You have to sleep
Sage: BUT DAD!!! I WANNA WATCH TV!!! (on the verge of tantrum)
Dad: If you don't listen and obey,
I'M NOT GOING TO LET YOU GO TO SCHOOL TOMORROW.
Sage: (gasp) huhuhu! okey. Lies down and finally sleeps.
I hope this threat will still be effective even when you're already in Pre-Med