Hello and Welcome to JustAnswer. Your question is not closed until you are satisfied. I am happy to assist you with your question.
I still remember all the pressure of graduate school and I heartily agree that exercise in the morning will make a huge difference in your functioning for the rest of the day. The endorphins will give you a feeling of well being, and the breathing will help to clear your mind. If you can't manage an hour, at least 30 minutes each day will work wonders.
Best of luck to you!!!!
Ok, thank you.