Definition of Aerobic Fitness

Definition of Aerobic Fitness

Aerobic fitness is a measure of your body's ability to take oxygen from the atmosphere and use it to produce energy for your muscle cells.

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Why Are My Shins Bruised from Running?

Whether you're a novice runner or a seasoned veteran, shin pain and bruising can rear its ugly head from time to time, interfering with your training and competition schedules. However, shin pain caused by running is not inevitable.

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Athletic women stretching on field

What Is a Realistic BMI for Someone Athletic?

When the long hours you spend in training pay off with low body fat and toned sculpted muscles, you feel pretty good about yourself. That is, until you [assess your body mass index](https://www.livestrong.com/tools/body-mass-calculator/), or BMI.

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Fatty Liver & Anemia

Fatty liver disease is a condition marked by fat accumulation in the liver that can occur in drinkers and nondrinkers alike. While some liver fat is common, too much fat in the liver can cause inflammation and scarring that eventually progresses to total liver failure.

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Weight Lifting for Women With Breast Implants

Working out with weights can give women an amazing body, stronger and more confident. But one negative side effect of lifting is a decrease in breast size due to loss of fat. To restore the twins to their former splendor, many women opt for surgical augmentation.

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Portrait of a young woman

What Effects Does Estrogen Have on an Adolescent Girl?

Estrogen is the primary female sex hormone and plays an important role throughout a woman's life. In teens, estrogen contributes to healthy bone growth and development and influences reproductive processes such as menses and fertility.

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Oil of Oregano for Children

A rising star in alternative medicine is oil of oregano. Oregano is universally famous as a seasoning in Mediterranean dishes, but concentrated doses of the oil of this herb have been used for centuries as a panacea for numerous afflictions, including digestive and respiratory diseases.

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Man standing over group of people doing pushups, side view

Rotator Cuff Injury From Pushups

Pushups are a great exercise for upper body conditioning. Too many pushups, or pushups done with poor technique, can overstress the shoulder joints. Many structures come together at the shoulder, including the muscles of the rotator cuff, which can be injured by poor pushup positioning.

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portrait of a young businesswoman yawning at a presentation

Can Lack of Sleep Make Your Legs Feel Weak?

In our culture, sleep deprivation in the name of accomplishment has become a badge of honor, letting the world know that you are going the extra mile to succeed and provide for your family. But the health repercussions of inadequate sleep may eventually net you diminishing returns.

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woman hands on belly

Infrequent Bowel Movements & Weight Gain

Infrequent bowel movements and excess body fat often go hand in hand, so it may seem logical to assume that they are related. But while there is often a correlation, neither condition causes the other.

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Fruit salad

Does Fruit Lose Nutrients in Oxidation?

Fresh fruit in an array of colors is visually appealing and full of nutrients that are essential to human health. But when fruit is stored improperly, or when it is processed, it can lose much of its nutritional value.

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Women walking on sidewalk

Does Walking Burn More Fat Than Jogging?

Walking and jogging are both effective for burning calories and improving your cardiovascular health. When it comes to burning fat, many people assume that jogging is more effective than walking. But walking can be just as effective as jogging if you walk for a long-enough duration at a high-enough intensity.

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Tea with sweetener in a spoon

Ketosis & Aspartame

The allure of low-carbohydrate, ketogenic diets is that they pay off quickly with rapid weight loss and tangible progress. Giving up all those tasty carbs, however, is tough. Artificial, calorie-free sweeteners can lessen any feelings of deprivation by boosting the flavor of your food.

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Human Heart

How Does Exercise Increase Venous Return?

Day in and day out, your heart pumps away faithfully, delivering oxygenated blood to cells throughout your body. But over time, a sedentary lifestyle coupled with stress and poor nutrition can lead to complications in your circulatory system that impede your heart's ability to do its job.

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