Dr. Zachary Michael Holliday M.D.

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• What is P90X System?

  P90X system is an extreme home fitness training program that claims to give you a lean and fab body at the end of a 90 day session. The training is provided through a 12-DVD set video program that features workouts for specific parts of the body. The program asks for six to seven days of regular one...

• Is There a Link Between Asthma and Bronchitis?

  Bronchitis and Asthma are both inflammatory conditions that affect lungs where a person’s airways swell up, causing them breathing problems.Asthma, also known as bronchial asthma, is characterized as a chronic condition in which a person’s airways become inflamed, narrow and swollen, and produce...

• When Could Orthopnea Mean Something More Serious?

  IntroductionOrthopnea is the medical term used when referring to the occurrence of dyspnea (shortness of breath) when you are lying flat. This symptom is often a sign of heart failure. However, orthopnea can also be due to other health conditions. Dyspnea (shortness of breath) is not the same with...

• What Causes Fatigue?

  Fatigue is the feeling of exhaustion when you lack adequate energy and strength to continue with the work. In most cases, the person with fatigue feels like taking rest due to the lack of energy. This is different from the general weakness wherein the person lacks enough muscle and physical...

• Yawning Scientific Facts: Why Do We Yawn and Is It Contagious?

  What is yawning?Usually, yawning is associated with boredom, fatigue, and tiredness. Yawning is also very common in animals, such as dogs, monkeys, snakes, and carnivores. Yawning is also associated with numerous superstitious beliefs.In humans, yawning is considered as a purposeful non-verbal...

• What Could Swollen Feet Mean?

  Swollen feet can be easily linked to pregnancy, standing for long hours, or injury by most people. These cases are often temporary and not a cause for concern. However, swollen feet can also be experienced by people without these factors and can be a sign of an underlying medical condition,...