I found these tips on a website and I thought they were worth sharing with you guys.
Reward yourself. If you find exercise is torture, give yourself something for getting through it. Whether you exercise for 4 days in a row, or jog an extra mile--if you're happy with your performance, give yourself a prize! This could be a day off from the gym, a new pair of jeans...make yourself happy because you deserve it!
Sports count too. If you hate the thought of going out to "exercise," find something you do like. Start a volleyball league at work. Learn to play tennis. You'll have fun and, guess what? You'll be exercising!