Go to a doctor.
Mood swings may be a sign of a mental health complication, but there may be other causes as well- my friend who had a thyroid problem used to have horrible mood swings, and they did some tests and found out what was wrong... he takes meds for it now and it's much better.
It's...
...preheated? Like, this package I have says to preheat to 375 degrees for 15 minutes. But it takes my oven under 10 minutes to actually preheat... so why does it specify the time? Why not just say "Preheat oven to 375 degrees"?
Would preheating it for 15 minutes even make a difference? I...