RLS is the occurrence of uncomfortable or painful leg sensations while the body is at rest. These unpleasant sensations are described as creeping, crawling, pulling, tingling, numbness, muscle contractions or leg cramps. There may be an irresistible urge to move the legs or “walk it off”.
Parasomnias are a group of sleep disorders that involve unwanted events or experiences that occur while you are falling asleep, sleeping or waking up.
A large proportion of the world's population is at increased risk of environmentally driven circadian rhythm and sleep disruption.