Joints can handle heavy pressure. For example, knees handle a force of three to four times a persons total body weight on average just talking a walk. The force of a deep knee bend during a squat can increase to nine times the body weight. So just imagine multiplying weight of more than 150 pounds times a minimum of three or four, and then even more. That can sure add up to a lot of heavy work on knee joints over time.
To check if a person has a sleeping disorder, a diagnosis is made by a physician specially trained in sleep medicine. After a physical examination of the upper airway and an interview with lots of questions, if it the tests have determined that the patient has a sleeping disorder, one will have to undergo a polysomnogram (sleep test). Most sleep centers and labs monitor 16 different sleep parameters including EEG, EKG, eye movement, chin movement, air flow, chest effort, abdomen effort, SaO2, snoring and leg movement.
The amount of sleep a person needs actually depends on the age and amount of physical and mental activity a person engages to. For example, an infant who does not perform any strenuous task and undergoing a period of rapid growth needs 16 to 18 hours of sleep. The same thing applies to teenagers who are experiencing the biological challenges of puberty. More often than not they require at least 9 hours of sleep every night for that matter.
Sleep apnea is a health condition far more serious than what most would think of. Sleep apnea is a health condition that happens when one’s breathing during sleep stop for a while, usually 10 seconds or even longer. Sleep apnea could happen 5 to 45 times per hour. Sleep apnea is usually associated with choking sensations and often leads to headaches and sleepiness during the day. Its moderateness or severity is measured with respect to the frequency of episodes per hour, whether you have no breathing (apnea) or slower breathing (hyponea).
Circadian Rhythm defects can come many distinct forms depending on the amount and timing of waking up and sleeping. Others, as in the case of Seasonal Affective Disorder (SAD), result in the changes in the length of day and night. People who tend to sleep at a later time of the day and wake up late as well are said to be exhibiting Delayed Sleep Phase Syndrome (DSPS). These people tend to develop insomnia, an abnormal inability to take adequate amount of sleep due to not being able to sleep at the right time of the night.
Light and temperature provides the determining factor by which the body responds to the 24-hour activity period It was believed that the fundamental locus or location of our biological clock is the brain specifically in the suprachiasmatic nucleus (SCN) of the hypothalamus. In complex animals like humans, the hypothalamus forms part of the autonomous nervous system which in part, controls the functions of organs that are not voluntarily controlled, hence involuntary.
Sleep forms part of humans' biological need to rest. As a person sleeps, the various physiological processes of a human body figuratively are put into an apparent arrest and some parts of our system that were mostly exploited can be replenished for future use. However, imagine a system so disrupted that our normal scheduling for sleeping and waking is totally altered. Some people tend to sleep early and wake up early in the morning and some cannot sleep early and as a consequence, wakes up late.
One reason for unsuccessful Restless Leg Syndrome treatment is due to patient’s attitude over the symptoms. Typical indications of the disease are ignored due to the symptoms unpredictable pattern of attack sometimes occurring during wakefulness or at night or in the middle of the sleep. Symptoms usually last for days or weeks or usually progress to weeks and disappear for weeks or months. Pain eventually reappears with less intensity after a day or weeks and even for months.