I just finished up a 25 minute run I squeezed in at lunch. A 3 mile run a day after I got in a 10 miler feels good. I stretched out the legs at a quicker pace than just jogging.
I hope the temperature stays up enough that I can get on the treadmill tonight for a 45 minute run and squeeze in 5-6 miles. I only have about 2 months of training time left before the Ridgewood Run.
My first 10K could be my only, so I want to be ready to do well. The 6.2 mile distance doesn't really appeal to me except that I have never done it and that I am planning to do the 10K and the 5K that day.
On a separate note, get out and walk, jog, exercise, etc. The Active Lifestyle can begin anytime you are ready mentally. There is no secret there. You do not need to be a competitive athlete to be an active, healthy individual. Do it for yourself.
Go do some mountain climbers!