Sleep is a natural activity of every individual. Almost a third of our lives, we spend to sleep. Formerly, sleep is considered as a body time to rest after being tired of working, schooling, and other activities.
As time goes by, science proves that sleep is no longer just something to fill the time when someone is in an inactive state. In fact, sleep alone involves a lot of activity and it has a lot of influence on health.
Various studies were conducted to see how the effects of sleep on the body found that sleep is related, among others, to the increase and decrease in body weight, to the risk of death in the future.
A study conducted by the University of Wincosin, USA found that the duration (duration) of a person's sleep can affect the Body Mass Index (BMI). The study was conducted on 1024 volunteers aged 30-60 years. In this study, less than 7.7 hours of sleep habits associated with increased BMI, both in children, adolescents, and adults. Why does this happen? Apparently, after examining the levels of hormones in the study sample, found that sleep is associated with changes in hormone levels called leptin and ghrelin.