Tennis pro Martina Navratilova is the latest celebrity to make an appearance in the diet and fitness game. She is trying her hand at weight-loss programs with Shape Your Self, a motivational feel-good guide to becoming more healthy.

Martina is drawing upon both her own personal experience and experimentation to create six steps to fitness. As she approaches 50, the tennis superstar is in the best shape of ever. The Shape Your Self program is online and features a 4-week workout, 28-day diet plan, 56 exercises, 8 vital keys to developing the body and mind and much more.

Perhaps the most imporant element of Martina's program is the six steps to achieving optimum wellness.

1. Develop an athlete's mentality

2. Build your support team

3. Fuel your body and mind

4. Go organic

5. Build fitness to function

6. Recharge and energize

While you will not become an award-winning tennis pro, you are likely to reap the many benefits the Shape Your Self program has -- a toned, trim body, weight loss, a more youthful appearance and the best shape of your life.

To kick of Martina's 28-day challenge, she has a 15-question personal health and fitness inventory to help users discover how close they are to their goals. The Shape Your Self exercise plan is a well-rounded approach that includes core exercises, body-shaping exercises, strenght exercises and corrective exercises. Regardless of whether you are a novice, intermediate or advanced, there is something for every body.

Shape Your Self also includes a 28-day meal plan with more than 40 balanced recipes. Martina shares dining out tips, a guide to portion control and nutritional tools to help shed those extra pounds. A big proponent of organic foods, raw foods and juicing, Martina's nutritional plan calls for nutrition plan calls for 2 to 3 servings of veggies, fruit, power carbs, dairy, lean protein and 1 serving of healthy fats each day.