Everyone who exercises knows the feeling of a burning, heavy sensation in the muscles after a vigorous set of reps or a long run. Burning sensations while working out are painful and make it difficult to continue your exercise. The sensation is...
When you train, you gather energy from several sources of fuel found in your body. When oxygen is present, the energy comes from stored glycogen and blood sugar. If you train hard enough, your oxygen level drops and your muscle cells and red...
Exercise plays large part of the prescription for a healthy life. It helps relieve stress, strengthen the body and maintain a healthy body weight. Try to get at least 30 minutes of exercise four days per week for good health. A healthy exercise...
Lactic acid is a byproduct your body creates when it uses up your oxygen reserves and doesn't fully break down the glucose it uses for energy due to a temporary lack of oxygen in your muscles. Although both aerobic exercises, like jogging, and...
During strenuous exercise, oxygen delivers energy to your muscles. As you continue to train, your body must work harder to deliver oxygen to your muscles. Your body breaks down carbohydrates for energy when oxygen levels decline, producing lactic...
Yoga is a form of exercise that improves your strength, tone and flexibility through holding a variety of poses for an extended period of time. Some yoga poses are inverted, or require that you bend a portion of your body upside down. These...
Lactic acid forms in your muscles and red blood cells when your body breaks down carbohydrates to use as fuel. This process occurs when you are low on oxygen, particularly during intense exercise; intense anaerobic exercise, like weight training,...
A burning sensation in your legs may indicate that your muscles are at the point of exhaustion. Even the most basic of snowboarding maneuvers require increased muscle stamina. Through regular physical activity, lactic acid will build up in your...
Nitric oxide is a gas that is vital to many cellular functions. Nitric oxide mediates some cellluar communication and facilitates nutrient transportation throughout the body. Your body synthesizes nitric oxide from the amino acid arginine. Nitric...
The body must maintain a proper acid/base balance to sustain life. Lactic acidosis is an excess of lactic acid in the body, primarily in the bloodstream. It causes one type of metabolic acidosis, a state where the blood and body tissues are too...
Pyruvate is generated by the body during carbohydrate metabolism. There are several disorders associated with pyruvate metabolism deficiency, most of which are genetic. In pyruvate dehydrogenase complex deficiency, or PDCD, the enzymes that...
Muscular endurance is the ability to perform sustained repeated muscle action for an extended period. Muscular endurance exercises targets a specific muscle or muscle group with activities that usually last less than two minutes. The short-term...
No pain, no gain is a common slogan used for the feeling you are supposed to endure during a workout. The feeling of pain comes from lactic acid buildup, resulting in a burning sensation in the muscles. It is a natural reaction by the body. You...
Lactic acid, or lactate, is a substance produced in your muscles when you need to move quickly or engage in certain other types of physical exertion. The buildup of this substance triggers pain in active muscles and decreases your chances of...
The 400 meter sprint is one of the most challenging events in track and field. At all levels, it requires speed endurance and technique. Runners should understand how the body reacts to the stresses that are put on it during the event. Athletes...
Yoga is a form of exercise that helps sync the mind and body. As you hold poses, you focus on breathing, relaxing and building strength. Some yoga poses, such as downward-facing dog and shoulder stands, involve inversion to some extent. These...
You don't need a doctor to tell you that the human body needs rest after exertion. Anyone who runs uphill, lifts heavy weights or cross-trains can feel it. Your body speaks to you through soreness, stiffness and diminished strength, telling you...
Physical activities can be categorized as either aerobic or anaerobic depending on the energy source used during the activity. The intensity and duration of the exercise also influence whether an activity is aerobic or anaerobic. Genetics and...
Biking -- the human-powered kind -- is an example of aerobic exercise, which is any activity you do that raises your heart rate and increases your body's demand for oxygen. Aerobic activity lasting longer than about 20 minutes will start to burn...
When you exercise on a regular basis, you are training your lungs to be able to take in more oxygen. Improved oxygen levels means that you can exercise harder, improve breathing and increase muscle strength. If you suffer from a lung disorder, you...
It's normal to experience some muscle pain after you exercise. Getting leg cramps is also common and is typically a sign that you're exercising too hard. However, leg cramps may also be an indicator of a severe medical condition that requires...
Organic Ume Plum Vinegar is the salted brine that results from fermenting sour ume plums in saltwater and perilla, or shiso leaves. This delicious condiments is a traditional food in China and Japan, valued for centuries for its medicinal...
Warming up and stretching both play a big part in maintaining flexibility. As we age, our muscles, joints, and connective tissues lose ability to move as they did when we were younger. As a baby, you could probably pull your foot up and put it in...
The best surfaces for running are firm but not too hard, relatively flat and smooth. Most marathons are run on pavement. Training on the same surface that you are running your marathon on will help condition your body properly. Keep in mind that...
Physical activity increases the blood flow throughout your body. When you exercise, your heart pumps more blood to accommodate the needs of the muscles being used. An increase in blood flow to any area of the body can cause a warming sensation....
Aerobic and anaerobic respiration are types of cellular respiration, the process by which living cells use up the free electrons produced during normal cellular metabolism to produce ATP, or adenosine triphosphate, the chemical compound used by...
Lifting, or elevating, your legs higher than your heart after exercise feels good and helps promote improved lower-body blood circulation. It does not, however, help remove lactic acid from your legs, and lactic acid removal should not be your...
Your body produces lactic acid, or lactate, in the absence of enough oxygen to convert glucose to energy. As your level of intensity increases, so do your levels of lactic acid. The muscle fatigue and pain that accompany lactic acid have given it...
While lifting weights, you may experience muscle pain. It is important to differentiate between muscle pain as a natural response to placing your muscles under healthy stress and the pain as a response to an injury that has occurred during your...
The interior shoulder stretch is another excellent cool down routine following an intensive workout. Learn how to perform interior shoulder stretches properly from a professional trainer in this workout video.
Learn how to Run the 800m Sprint After 600 Meters with expert tips and advice on training and running in this free video clip.
Painful condition for runners and athletes who do a great deal of running. Cause of compartment syndrome is leg muscles outgrowing their enclosures. Learn more about this condition in this medical treatment video.
How to do split squats in playground fitness in this free playground health video.
