If you falter along the way, you don't need to look at it as a failure because you know that you have a long time to make the changes.

For example, if you go with your friends to eat at a fast food restaurant, and you indulge in a large order of fries, there is no need to feel guilty because you know that eating them is not a regular habit, and that at the next meal you will eat more sensibly.

If you don't feel like you have energy to exercise now, start out with some physical activity that will get you moving, but won't require a lot energy.

How about taking the dog for a walk? Or, if you don't have a dog, take the neighbor's dog for a walk. Once you have done some walking, every day for a couple of weeks, try running for a short distance.

Teen weight loss tips will work better if you get out on your bicycle, or roller blades, or shoot some baskets in the driveway. If you are at a loss for exercise ideas, speak to your gym teacher. I'll bet they would love to help you out. Most teachers are thrilled with kids that are self-motivated to improve.

And can help purchase the foods that will help, such as fresh fruits for snacks and whole grain cereals for breakfast. And they can avoid purchasing foods that will tempt you with poor choices, such as sodas, chips, candy, donuts or cookies.

Other things you can look at (for example) may be the amount of time you spent being physically active and not watching television, an increase in endurance (for example, biking for a longer distance or jogging for a longer period of time), or a week of making nutritious snack choices (for example, after school you picked a yogurt fruit smoothie instead of cookies and a soda).

In the real world, most people don't look like that. In fact, it is hard to look like a model and still get the appropriate nutrition from an adequate amount of food.

Instead, take a look at high school and college athletes. Most of them are muscular, full bodied and brimming over with good health! You don't have to be a full fledged athlete to look or feel that way, but once you have developed an active lifestyle and good eating habits, you will feel very comfortable with these teen weight loss tips