Ha ha, I am a teacher too (university) and I know exactly where you are coming from. I have been teaching for almost 20 years (OMG!) and I am still totally wiped out the first weeks of every semester, especially after the long vacation. In any new job, things like the new hours and requirements take adjustment, and that somehow takes a lot of energy until you get used to them.
Teaching takes a special focus and drain on your attention, compared to what you probably did before, especially for younger students because you have to be on your toes for hours at a time. Although you might not have realized it looking on from the outside, you're probably "on alert" a lot of the time compared to your non-teaching day, which is going to get hormones and adrenalin raised. When you're done your body says, "Whew! Emergency over! But it looks like you're living a pretty stressful lifestyle now! Time to chow down so you're well supplied with energy for the next emergency!" Hopefully you will get used to it in time.
The most tiring thing for me is that I have to do a lot of "performance" to hold university students' attention in a large lecture class, which is not at all my natural personality. This may be true for you too. It takes a lot of energy, not physical exactly -- although we do stand and walk around and gesture more than we might in a similar day at home -- but projected concentration, like an actor doing a play. I think mental strain makes your body think it's burning energy and want calories, even if it actually doesn't burn as many calories as physical exercise. In the first weeks you may really be burning more calories than usual, or it could be stress-induced cravings.
And if you have a schedule that allows no time to pee without someone clamoring for your attention, let alone get a snack or drink when you would normally have one, you get extra hungry too. When you're at home with your own kids it might be easier to get those breaks.
Good luck in your teaching!
Last edited by bronzeager; 03-21-2010 at 08:57 AM.
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