Coordinating which body parts to work together in the gym optimizes fitness. Learn how to manage knee injuries, tooth enamel, and facial skin changes.
Getting tripped up during a sporting event or simply losing your balance while strolling down a sidewalk can have painful consequences. Your knee may take the hit or twist and bend awkwardly during a fall.
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When attempting to gain muscle and improve your body composition, there are many types of workout programs you can use. One potential muscle-strengthening method is to train just one body part a day.
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Paralysis, or the inability to move or feel part of the body, is a symptom of many disorders and afflictions. While paralysis can occur due to stroke or back injury, other causes of paralysis are less well known.
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About 8.1 million people in the United States use marijuana, also called cannabis, on a daily or almost daily basis, reports the 2013 National Survey on Drug Use and Health. Like tobacco, marijuana smoke contains high concentrations of many chemicals, and some of them are known cancer-causing substances.
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Enzymes are specialized proteins your body uses to carry out a wide variety of chemical reactions. Without enzymes, these reactions would not occur fast enough to sustain human life.
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If you have a knee injury, staying in shape without making the knee worse is a major concern. Cardiovascular exercise is important for general health and also aids in healing injuries by providing freshly oxygenated blood cells to the area.
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Your muscles need a day of rest in order to recover from a strength training workout, so if you are going to the gym every day, you may want to split up your workout routine into groups that you can work together.
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A burning sensation in your feet during exercise can be so uncomfortable that your workout is cut short. The tingling, burning and sweaty feeling makes exercise less enjoyable.
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When the knee gets hot after exercising, it could indicate a variety of problems. The increased temperature is often a sign of inflammation -- the body's response to tissue injury or infection.
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Kicking a football -- either a round soccer ball, oval American or rugby ball -- uses a lot of muscles and joints. A successful kick requires good eye-foot coordination, balance, accuracy, skill and power.
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While your weight can be a reflection of your current state of health, your height usually isn't. According to "Scientific American," 20 to 40 percent of your height is determined by environmental factors like nutrition, but 60 to 80 percent is determined by genetics.
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Red, blotchy facial skin is unsightly and can be uncomfortable, depending on the cause of the blotches. When blotches suddenly appear on your face, an allergic reaction or skin condition may be to blame. Your doctor can prescribe an appropriate treatment to clear up red skin blotches and ease any accompanying itching.
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If you feel bloated and gassy regularly, you’re not alone -- 10 to 20 percent of adults complain of gas in the form of belching or flatulence, and it’s normal to emit flatus 12 to 25 per times day, according to Brigham and Women’s Hospital.
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From single-celled organisms such as bacteria to humans, cells are the basic structural and functional units of life. An adult human body consists of more than 37 trillion cells, according to an estimate published in the November-December 2013 issue of the "Annals of Human Biology."
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Waist-to-chest ratio is an important number used to gauge health and fitness. Specifically, it is a measure of the proportion of the waist circumference to the chest circumference. This ratio is used in conjunction with waist-to-hip ratio and body mass index to determine overall body shape.
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The process by which dietary calories are absorbed is called metabolism. Metabolism starts with digestion. Digestion begins in the mouth where food is combined with saliva during chewing and carbohydrates begin to break down into simple sugars.
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Nerve cells send signals along long wires called axons, which are insulated with a fatty substance called myelin. The myelin sheath allows signals to be transmitted rapidly from the nervous system to the rest of the body. When myelin is destroyed -- called demyelination -- nerve signals are slowed or stopped.
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At colleges and universities, anatomy and physiology are often combined into one course. This is because they are branches of the study of biology that are closely related.
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Pain can develop in several parts of the back, including the middle region. If muscle tightness and joint stiffness are contributing to mid-back pain, stretching this area can help. Stiffness often settles into the mid-back due to poor posture and aging.
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As you age, your skin loses some of its natural elasticity. The result is fine lines and wrinkles that gradually deepen over time. Fortunately, you don’t have to go under to knife to reduce the appearance of aging.
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