Research was conducted Karin Zeitvogel in the Faculty of Medicine, West Virginia University and is written in the journal "Sleep"-published by the American Academy of Sleep Medicine (AASM) and the Sleep Research Society, the Sunday edition (eighth) in Washington, USA.
Karin says, the biggest risk is the age group under 60 years old who slept five hours or less a night. They are at risk of developing cardiovascular disease are three times more than those who slept seven hours.
David Dinges, chief of Sleep and Khronobiologi Unit at the Faculty of Medicine, University of Pennsylvania found, 142 adults with very limited sleep for five days, slower to react and difficult to focus.
"One or two extra hours of sleep in the morning after a period of chronic sleep loss is useful for the recovery of alertness," says Dinges.
Parties AASM recommends: adults sleep for about seven to eight hours every night so as not exposed to the risk of heart disease.
by: (AFP / Yun) Kompas.com
