No one-size-fits-all approach applies to calorie burning, so no single answer exists as to how many calories are burned in a 3-mile run. A very rough estimate puts your burn at about 300 calories, but that's a very imprecise calculation that likely won't work for many people.

Creating an appropriate exercise program to improve body composition — the relative proportions, by weight, of fat and lean tissue — can be challenging. The objective of any fitness plan is to eliminate fat and enhance muscle tissue, a process known as "toning."

Step climbing, whether climbing stairs or training on a stair climbing machine, is a high-intensity exercise that has a low-impact effect on lower body joints. Workouts increase muscular endurance while improving lower body muscle tone.

Cardiovascular exercise -- you know you need to do it to stay healthy and manage your weight, but you can never seem to find enough time between work, family and social obligations. The good news is you don’t need to spend hours plodding away on the treadmill -- you just need to choose the right workout.

The ECA stack combines ephedrine, caffeine and aspirin in a predetermined ratio. It causes your body to target specific fat cells to be burned for energy, all the while raising your overall metabolic rate and suppressing appetite. Each ingredient in an ECA stack works in conjunction with the next.

Whether you prefer to cycle outside on your own bicycle or indoors on a stationary cycling bike you can burn a great amount of fat if you are dedicated to weight loss. Cycling will help improve your heart health, increase your muscle tone and burn calories to reduce your body fat.

"Starve a fever, feed a cold" is a saying that may not be true. The increased calories used when you have a fever seem to require that you maintain adequate energy to fight your illness.

A healthy, calorie-controlled diet and regular cardiovascular and strength-training exercises will help you acheive a flat stomach and small waist.

As a marathoner, you'll burn through lots of energy on the 26.2 mile course. Because nutritional needs and energy demands are high, runners should strive for balanced, nutritious diets in order to improve performance and endurance.

The three major muscles of the abdomen are the transverse abdominis, rectus abdominis and obliques. The Ab Ripper X, part of the P90X exercise series, is designed to strengthen these muscles, and can burn up to 600 calories per session.

Swimming is a minimal-impact, full-body workout enjoyed by many people. Swimming requires the use of nearly all of your main muscle groups, has a high caloric burn and has a substantial need for breath support.