Out of shape

I've been back at school for about 2 weeks now, and once thing is becoming rapidly apparent: I am dramatically out of shape. My intellectual flab keeps me from nimbly maneuvering through homework and critical reflection in the same way my lithe mind perfected last semester. Life just seems to have piled up a huge mountain of administrative tasks to take care of. Laura recommended that I write down in a list everything I have to do and then just start checking them off one by one. I haven't done that yet, but think I'll probably need to, just because the concept of raising support is way too overwhelming otherwise.
Not only am I out of shape academically, I'm also sucking the proverbial air through my proverbial toe nails with regards to relationships. It's pretty tough to find time for all the people I need to make time for, and it seems like any care-free frolicking is out of the question.
I'm not sure I should even talk about what kind of shape I'm in physically. I watched Rocky 3 a few nights ago and left the room after feeling at once very depressed and very motivated.