In reply to Katy.

Hi Katy! One of the benefits of intermittent fasting is teaching your body to recognize that being hungry is not an emergency! I had the same "hanger" issues in the mornings and couldn't function or be polite before breakfast. The first few days fasting were hard, but eventually my body understood that, yes, it's hungry, but it shouldn't shut down and demand food. Food is coming! Your body will adapt.
I would suggest starting with an 8 hour feeding window. Maybe something like breakfast at 9am and last meal at 5pm? Coffee is your best friend while IF :). Since you wake up so early, your first meal an be earlier. As long as you're in a fasted state for a good amount of hours, 16 in this case.
Also, you don't need to fast every day! On the days you teach your class, maybe take it easy and eat if you really don't feel up to it.
Let us know if this helped! Feel free to email us if you have more questions- good luck!