Lunges are a compound exercise, which articulate your knee and hip joints and activate over 10 different muscles in your lower body. The primary muscles used in lunges are your quadriceps. Each quadricep muscle comprises four smaller muscle segments, which attach to different parts of lower body skeletal structures.

When an airway in the lungs becomes blocked and causes such alarming symptoms as breathlessness, wheezing, chest tightness and coughing, immediate medical intervention is necessary.

Blood carries oxygen to every cell in your body to allow them to live and function properly. Low blood oxygen levels -- known as hypoxemia -- typically refer to an oxygen level in your arteries less than 80 millimeters of mercury (mm Hg).

A normal heartbeat consists of 60 to 100 beats per minute, according to Medline Plus. Irregular heartbeat, also called arrhythmia, has the heart racing, pounding or skipping beats. The effects often are felt in the chest, throat and neck.

Phlegm. It's hard to spell, sounds terrible and feels worse. Physicians and researchers call excess phlegm in the lungs and upper chest "chronic mucus hypersecretion." A runny nose, sneezing and coughing up phlegm are common symptoms of seasonal allergies such as hay fever.

Albuterol is a bronchodilator that works to relax constricted air passageways to improve air access for people experiencing bronchospasm or suffering from obstructive airway disorders, according to Drugs.com.

There are innumerable causes for coughing and wheezing. When there are no obvious illnesses accompanying your cough, you might have a chronic respiratory disease such as asthma, bronchitis, emphysema or pneumonia.

Bronchitis is a respiratory infection that can be caused by a virus or a bacterial infection. People who have acute bronchitis usually experience symptoms including a low grade fever, coughing that brings up mucus and wheezing, according to the National Institutes of Health (NIH).

Breathing is important throughout all functions of life and for every form of exercise. According to Beth Shaw, founder and author of YogaFit, because most people have stressful work and lives, commonly they only use the upper third of their lungs to breathe. This “chest breathing” tends to be very shallow.

A urinary tract infection, or UTI, refers to any infection of the kidneys, ureters, bladder or urethra according to MayoClinic. Most infections occurring in the bladder cause burning urination, frequency, urgency and colicky abdominal pain.

Pulmonary fibrosis is a condition characterized by gradual scarring of your lung tissue. Over time, your lung tissue thickens, making it difficult for your organs to reap necessary oxygen. Common symptoms of pulmonary fibrosis include coughing, fatigue, lethargy and loss of appetite.

People with asthma suffer from spasms in which their airways contract, resulting in wheezing, coughing and difficulty breathing. According to Brown University, coughing is the primary, or even the only symptom of asthma in some people. Asthma coughing after eating can be due to several causes, called triggers.