How Does Sleep Deprivation Affect Productivity?

Sleep deprivation is an issue even for career professionals, and besides students they are the second largest demographic suffering from it. It affects everyone from athletes on the field to those who sit in office chairs for hours a day. 
On the athletic side, athletes often suffer from sleep deprivation due to demanding practice schedules, and frequent traveling. It can be difficult for professional athletes to find time to get adequate sleep, and the consequences on the field are myriad. Sleep deprivation can cause impaired motor skills, slowed reaction speed, and increased stress levels. Sleep deprivation also amplifies the effects of any physical exhaustion they’re already feeling, causing them to tire out far quicker.
Office workers suffer from similar symptoms too, and tend to fall asleep more often at work or, at the very least, lose focus easier. Due to this reduced productivity, sleep deprivation in the workplace results in a loss of roughly 11.3 days of work a year on average. This is a huge loss in productivity, and has consequences not only for the worker but also for the company which employs them. A main cause of this sleep deprivation in the office environment is the increasing connectedness of workers, who are often disturbed late at night or early in the morning by calls. This leads to reduced in-office productivity, which in turn leads to more out-of-office calls, thus perpetuating the cycle of sleep deprivation in the workplace.