After just two nights of bad sleep that can be cognitive impairment on tasks requiring focused attention, mood is affected, creativity is lessened, and our patience is reduced.
People who frequently wake in the night, such as those with chronic pain or sleep apnea, can suffer from excessive daytime sleepiness – falling asleep for microsleeps during the day. This is also a major cause of car accidents, with drivers falling asleep at the wheel. The recent Croydon tram crash was also put down partly to fatigue and sleep deprivation.
Several major disasters have been linked to sleep deprivation fatigue, such as the Exxon V lex oil disaster in Alaska and even Chornobyl and the US Space Shuttle Challenger disaster in 1986.
The Royal Society for the Prevention of Accidents (RoSPA) website has frightening statistics on fatigue and accidents. This is a link to driving and fatigue, but fatigue impacts all aspects of Health & Safety and accidents.
https://www.rospa.com/road-safety/advice/drivers/driver-health
If you are tired and exhausted, I can help you sleep better, and so become a safer driver.