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Wolff-Parkinson-White syndrome is an abnormality in the electrical functioning of the heart which may cause rapid heart rates. The abnormality affects the electrical signal between the atria and ventricles.
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Abstinence is the act of refraining from engaging in a positively reinforced, or pleasurable, behavior. It is typically a voluntary act, but it can also be imposed, and it typically occurs when an individual experiences a sense of decreased personal control over a behavior (e.
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Researchers say "moderate" caffeine intake doesn't pose a significant health risk, even for people 65 and older. But the experts are talking about people who don't have a special health problem, such as heart disease or high blood pressure. And "moderate" means 300 milligrams a day.
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