I am trying to build up some basic fitness from basically zero. But, I have to spend quite some time in front of a computer-screen. Gyms drive me crazy (too many people around...) and running just is not for me (yet... who knows?). What I CAN do, though, is short little workouts during screen-breaks.
  
But is that even effective? Is, for example, bringing my heartrate up with about a minute of cardio-excercises going to help me burn fat, or am I just going to look silly?  
  
Thanks,
Layna