We need sleep to function properly. Preferably eight hours. But getting that much sleep on a nightly basis is becoming more and more difficult.
A 2012 Centers for Disease Control and Prevention study found nearly one-third (30%) of American workers are getting less than six hours of sleep every night. The medically recommended amount is 7 to 9 hours of sleep on a nightly basis. While you might be tempted to say “So what?” you should remember lack of sleep not only leads to poor job performance, but obesity and types of cardiovascular disease.