"Exercise is the single best thing you can do for your brain and stress levels in terms of mood, memory, and learning," says Harvard Medical School psychiatrist John Ratey, author of the book, Spark: The Revolutionary New Science of Exercise and the Brain. "Even 10 minutes of activity changes your brain and released tension."
Regular exercise can help protect you from heart disease and stroke, high blood pressure, noninsulin-dependent diabetes, obesity, back pain, osteoporosis, and can improve your mood and help you to better manage stress.
For the greatest overall health benefits, experts recommend that you do 20 to 30 minutes of aerobic activity three or more times a week and some type of muscle strengthening activity and stretching at least twice a week. However, if you are unable to do this level of activity, you can gain substantial health benefits by accumulating 30 minutes or more of moderate-intensity physical activity a day, at least five times a week.
If you have been inactive for a while, you may want to start with less strenuous activities such as walking or swimming at a comfortable pace. Beginning at a slow pace will allow you to become physically fit without straining your body. Once you are in better shape, you can gradually do more strenuous activity.
How Physical Activity Impacts Health
Regular physical activity that is performed on most days of the week reduces the risk of developing or dying from some of the leading causes of illness and death in the United States.
• Reduces the risk of dying prematurely.
• Reduces the risk of dying prematurely from heart disease.
• Reduces the risk of developing diabetes.
• Reduces the risk of developing high blood pressure.
• Helps reduce blood pressure in people who already have high blood pressure.
• Reduces the risk of developing colon cancer.
• Reduces feelings of depression and anxiety.
• Helps control weight.
• Helps build and maintain healthy bones, muscles, and joints.
• Helps older adults become stronger and better able to move about without falling.
• Promotes psychological well-being.
Specific Health Benefits of Exercise
Heart Disease and Stroke. Daily physical activity can help prevent heart disease and stroke by strengthening your heart muscle, lowering your blood pressure, raising your high-density lipoprotein (HDL) levels (good cholesterol) and lowering low-density lipoprotein (LDL) levels (bad cholesterol), improving blood flow, and increasing your heart's working capacity.
High Blood Pressure. Regular physical activity can reduce blood pressure in those with high blood pressure levels. Physical activity also reduces body fatness, which is associated with high blood pressure.
Noninsulin-Dependent Diabetes. By reducing body fatness, physical activity can help to prevent and control this type of diabetes.
Obesity. Physical activity helps to reduce body fat by building or preserving muscle mass and improving the body's ability to use calories. When physical activity is combined with proper nutrition, it can help control weight and prevent obesity, a major risk factor for many diseases.
Back Pain. By increasing muscle strength and endurance and improving flexibility and posture, regular exercise helps to prevent back pain.
Osteoporosis. Regular weight-bearing exercise promotes bone formation and may prevent many forms of bone loss associated with aging.
Psychological Effects. Regular physical activity can improve your mood and the way you feel about yourself. Researchers also have found that exercise is likely to reduce depression and anxiety and help you to better manage stress.
I'm a totally advocate for exorcise and it's benefits. In saying that, here's a recap:
Exercise and Stress
Regular exercise reduces the amount of stress hormones in the body, resulting in a slower heart rate, relaxed blood vessels, and lower blood pressure. Increased relaxation after exercise shows on your face with reduced muscle tension.
Exercise and Your Mood
Research shows that regular exercise reduces symptoms of moderate depression and enhances psychological fitness. Exercise can even produce changes in certain chemical levels in the body, which can have an effect on the psychological state.
Endorphins are hormones in the brain associated with a happy, positive feeling. A low level of endorphins is associated with depression. During exercise, plasma levels of this substance increase. This may help to ease symptoms of depression. A recent National Health and Nutrition survey found that physically active people were half as likely to be depressed.
Exercise also boosts the neurotransmitter serotonin in the brain. Neurotransmitters are chemicals that send specific messages from one brain cell to another. Though only a small percentage of all serotonin is located in the brain, this neurotransmitter is thought to play a key role in keeping your mood calm.
Exercise and Colds
Regular exercise appears to help jump-start the immune system, thus helping to reduce the number of colds, flu, and other viruses.
Exercise and Brainpower
Exercise boosts blood flow to the brain and helps it receive oxygen and nutrients. The better shape you're in, the faster you fire brain waves that are responsible for quick thinking.
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