[milkcircle]

As a student I have a similar problem of spending too much time at my desk, both weekdays and weekends. Here's what I hope to implement in the coming semester to stay more fit:

1) Wake up very early (goal is 6:30am) to spend an hour working on fitness before breakfast and starting class.

2) Follow /r/bodyweightfitness and /r/running, and use their beginner programs to come up with my own schedule Mondays through Saturday.

3) Explore my city (walking, biking, hiking) early Saturday morning to Saturday afternoon.

I think a major step in the right direction is waking up early and getting your exercise "out of the way" for the day. It serves as a huge motivator and is a great routine to become accustomed to. Not to mention, on Saturdays, if you wake up very early, you can fit in 6 or 7 hours of fun and exploration and still have half the day to be productive afterward.