Get some exercise in!
At the very least, get some walking in a few times per week. My goal is to get in some exercise at least 3 times per week.
I use the treadmill, and I keep my treadmill walking more exciting by attaching a portable DVD player to my treadmill, and watching one of my favorite Rob Pattinson movies.
I find this extremely motivating!
Before you know it, 45 minutes have passed!
I'm so busy ogling Rob, that I don't even realize I'm sweating and out of breath. That's my usual reaction to him anyway!
I know some of you like to read while you are on the treadmill.
A hot and steamy fanfiction might be just the motivation you need to keep going!
Books on tape are good too!
So whatever gets you moving and keeps you moving - do it!