If you're not a morning person, you're in luck. You have something you can use to get yourself fit.
I"m not a morning person either. But this morning, a Sunday, I got up at 4 and worked out for two hours. First Insanity Plyometric Cardio Circuit, then running the meadow, then running the mountain road in the dark. I scared a moose, which crashed through the trees at the sight of my headlamp.
And I'm not a morning person. So here's how it works.
1. Don't worry about being motivated.
Your problem likely isn't motivation, it's time. To be in ideal shape you need an hour a day, six days a week, minimum. I get up and push play on an exercise DVD. Then I just do what the DVD tells me to do. After an intense indoor exercise, running outside seems like a treat.
2. You don't have to be a morning person.
Because you're not a morning person, you have a block of time that's ready to use. It's like a rich vein of, um, time ore. If you can unearth it, you'll have an hour of unused time that you can convert into workout time.
3. The secret to morning lies in the evening.
To gain that time, you must first eliminate an hour of wasted evening time--the time you use for TV or the Internet. Do something less addictive for that evening hour for a week. Then start going to bed an hour early for a week. The following week, get up an hour earlier. Stretch, go for a walk, read. Then, a week after that, do your first workout.
You're still not a morning person. You've just moved into a different time zone. I had been getting up at 6, and I moved that to 5 some years ago. A few months ago I moved it again to 4. That's because I need two hours a day to train for running my age and breaking the time barrier.
It'll take you at least three weeks before you start your first exercise. But I've learned that, next to dialing in your nutrition, carving that hour of time is single most important step to your ideal fitness. It's what I call the Tortoise Method. Get on that tortoise and ride, baby. Very slowly.
Let me know when you're ready. I'm here to help. In return, I hope you'll root for me as I train to run my age.