Determining the average weight and height of a 15-year-old is not an exact science. Since teens are still growing, especially in regards to their weight, it can be difficult to assign an average number. That's why body mass index is often when looking at the health status of a teenager.

Determining what a normal body weight for a 5'4'' girl is can be determined by using height-weight charts, body mass index and ideal body weight equations.

Intense exercises such as running, cycling and jumping rope will help you burn 1,000 calories in a day.

Doing 100 sit-ups doesn't burn very many calories -- only about 13 to 40, depending on your body weight.

Richard Reilly shares his secrets to successfully losing 130 pounds in the span of 3 years. This is his story.

Personal training workout routines for clients are based on the goals, fitness level and health condition of each individual client.

Weight loss requires work. You must change your eating habits, exercise more and learn ways to deal productively with stress.

Although men are prone to gain weight around the middle, women can also gain belly fat, especially when genes, hormones and aging are factored in. The only way to lose your excess midriff fat is by making healthier lifestyle choices.

While being overweight can pose risks to your health, excess fat is especially dangerous if it is around your waist and can lead to a variety of health problems.

If you're trying to lose weight, finding ways to reduce your body's cortisol level may help you drop excess pounds.

You can't target your belly alone for weight loss, but effective lifestyle changes can help you get rid of fat all over, including your midsection.

Excess belly fat increases your risk of medical conditions, such as coronary artery disease, diabetes, hypertension, cancer and elevated triglycerides. A reduced-calorie diet and effective exercise can slim your stomach and improve your quality of life.