Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
On my ring for my fitness it says that I have 5 of 30 minutes done for exercise but I haven't done anything overly difficult besides my normal routine day job today....so how does it determine what is 1 minutes of exercise?

HR > X + movement. The HR for me to generate exercise seems to be at 120 or higher. I think its different based on your age, weight, height.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.