Exercise Cuts Sleep Disorder Risk
Regular exercise cuts the risk of developing sleep disorders, a study found. Researchers mailed surveys to random Wisconsinites and asked about exercise habits. Then researchers tested responders in a sleep lab for nocturnal breathing disorders, such as sleep apnea. Two years later, the process was repeated. People who exercised the most were at the lowest risk for sleep-disordered breathing. Plus, those whose physical activity dropped over the two-year study were more likely to develop sleep disorders. This suggests that it's a lack of exercise that triggers sleep problems and not the other way around.
Source: The American Journal of Medicine, May 2012