I have found a new phenomenon in my life recently: not wanting to ride.

I am a full time grad school student, working on my doctorate in Physical Therapy. I go to school about 40 hours a week, plus on top study about 20 hours a weekend, and 1-2 hours per night during week days depending on how tired I am. I have recently lost a lot of motivation to ride. Its really scary, almost like I feel guilty for going out riding when I should be studying or working on something. I also get too tired to come home and ride, plus it doenst help that I am in school from 8-4 or 5 every day. But here is the weird part. I love riding weekends, and often ride 40 mi group rides saturday and sunday.

Does anyone else get so stressed that they DONT want to ride? The intereset in bikes is still there, I am constantly on forums, websites, etc. The love is there, but the actual ride part during the week, I am too stressed out to ride? WTF?