How to get fit? What is the MOST IMPORTANT factor? My answer is CONSISTENCY. So just before I do what my program says and head off to the gym before doing some sprints on an oval, here is an interesting article which talks about CONSISTENCY and REST.

"It's common wisdom that missing a day or two of exercise makes it harder to get back to it the next day, but The New York Times points out that it's not as cut and dried as simple motivation. A number of other factors show how important consistency is when sticking to a workout..."
... continued at http://lifehacker.com/why-consistency-matters-with-exercise-513762748
And it references the New York Times article which concludes...
“The key is probably to not miss more than two days in a row,” Dr. Joyner says, “and skipping only one day is even better.”
COMMITMENT
CONSISTENCY
COMMON SENSE
But the greatest of these is CONSISTENCY.