Work as a team. This will keep you both focused on your efforts together. For example, add up your total combined walking mileage and work toward increasing this distance every week. This strategy also helps you complete your workout and contribute to the team effort even if it turns out you have to work out at separate times.

Reward success. Promise each other a treat when you reach your goals, and make the presentation special. Nothing breeds success like success, so be sure to celebrate your achievements. Rewarding each other for reaching short-term goals can lead to long-term success.

If for some reason your mate stops moving, don't let that stop you. Forge ahead while staying positive about your progress, and encourage him to get back in the game. If done right, playing together can mean staying together. Staying healthier is just part of the reward.

Got a question or comment for Liz? Post it on the Fit by Friday message board.