Not all carbohydrates are equal -- especially when it comes to their effect on cholesterol. Some carbohydrates raise cholesterol, while others lower it. You find carbohydrates in breads, cereals, grains, milk, yogurt, fruits, vegetables, and foods that contain added sugars.

When you think of muscle, skeletal muscle, which helps you move, might be what first comes to mind. But other types of muscle tissue, such as cardiac and smooth muscle, also play an essential role in keeping your body properly functioning.

Atropine is an anticholinergic medication that may be administered in a variety of medical situations. Anticholinergic drugs block the action of acetylcholine, a neurotransmitter found in many places throughout the body. Atropine is often used during surgical procedures performed under general anesthesia.

Although sodium is essential for a healthy body, a significant majority of Americans eat more than twice the recommended amount, according to the American Heart Association. While those salty snacks might be tantalizing to the taste buds, they’re quite dangerous to the body’s health.

When it comes to cholesterol, drinking alcohol is a matter of balance. On the one hand, drinking moderate amounts of alcohol have been shown to improve "good" cholesterol levels and have been linked with reduced incidence of heart disease.

Cardiovascular endurance is the ability of your cardiovascular and respiratory systems to work properly while under the stress of a challenging exercise session. These systems include your blood, heart, blood vessels and lungs.

Oxygen is transported by your red blood cells to all the organs and tissues of your body. This happens in the alveoli, which are the final branchings of your lungs, where oxygen diffuses through the alveolar epithelium into your alveolar capillaries, according to the Johns Hopkins School of Medicine.

Your pulse rate or heart rate is the number of times your heart beats per minute. Knowing your pulse rate can give teenagers key information about their health and fitness level. A “normal” pulse rate or heart rate is actually a range rather than a specific number.

Heart rate recovery is the amount of time it takes for your heart to return to a normal level following exercise. Usually this is measured at a physician's office with the use of a treadmill stress test.

Extra light olive oil and sunflower oil are great options to use when you deep-fry foods. They have a high smoke point and heart-healthy unsaturated fats. Other good options include canola, safflower and peanut oils.

A slow heart rate is a condition known as bradycardia. A normal heart rate falls in the range of 60 to 100 beats per minute. According to the Mayo Clinic, a person with a slow rate, or bradycardia, has a heart that beats fewer than 60 times per minute. For some people, there are no problems with the slow heart rate.

During a panic attack, also called an anxiety attack, you may notice that your heart is pounding very quickly. A normal heart rate is between 60 and 100 beats per minute, depending on your activity level, age and overall health, but during a panic attack, it may beat from 8 to 20 more beats per minute.