Researchers are also using light therapy to alter the body's natural circadian rhythms. Sleep Apnea Sleep apnea is a disorder associated with interrupted breathing during sleep. It usually occurs with increased age, fat build-up, and loss of muscle tone. The interruption of breathing is due to he collapse of the windpipe when muscles relax during sleep. This blocks the flow of air for up to a minute or until the person wakes up.
Sleep apnea can also occur when the neurons that control breathing malfunction during sleep.
About 18 million Americans are affected by sleep apnea. These people need to get tested at a specialized sleeping center. Some cases of sleep apnea can be treated by weight loss or by not sleeping on your back. More serious cases need special devices or surgery to correct the problem. Restless Leg Syndrome Restless leg syndrome is an inherited disorder that causes prickling or tingling sensations in the legs and feet.