So I've been running a lot on the treadmill, except for the past few days. I been doing about 5 miles each day. I would run a straight 2 miles and time myself. Then I would run 60-120's, which is sprinting 60 seconds, and then walking 120 seconds. I would do this over and over and each time I would up my speed and/or the incline! I love the feeling after the workout is complete! While my muscles may be sore and I'm tired, I feel energized and full of life!
I also looked at the P90X routine and haven't started it yet, but I want to. In 3 months I should be in really good shape- more defined abs, stronger, and even better at cardio.