Discrete Mathematics/Functions and relations. This article examines the concepts of the function and the relation. A relation is any association or link between elements of one set, called the domain or (less formally) the set of inputs, and another set, called the range or set of outputs.
Sleep deprivation. Sleep deprivation is the condition of not having enough sleep; it can be either chronic or acute. A chronic sleep-restricted state can cause fatigue, daytime sleepiness, clumsiness and weight loss or weight gain. It adversely affects the brain and cognitive function.
It is easy to recognize that being overweight or obese can have negative health consequences, but how does being overweight affect your sleep and risk of sleep problems? You may be surprised to learn the unexpected waysâfrom snoring and sleep apnea to restless legs syndromeâthat your ability to rest may be compromised.