I love my job! Absolutely love it! But it takes so much time and energy. What's a workout? I don't think walking up and down in front of the blackboard counts, though it does leave me sore. It's all small movements.
I write with my write hand and erase with my left so at least I lift that arm once in a while.
I think I need to spend my two-three light/easy weeks between quarters getting re-established in an exercise program.
Notice the word "think." Where is my commitment?