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.
Improving sleep will absolutely improve your body composition. A lack of sleep causes an increase in the appetite-stimulating hormone ghrelin and a decrease in leptin, a hormone that helps you feel full and burn fat. Aim for seven to nine hours of sleep each night.