How long can a human survive without sleep?

1. What Happens When a Person Goes Without Sleep? When a person goes without sleep, they experience a range of physical and cognitive impairments. Physically, they can become drowsy and lethargic, have difficulty concentrating, and feel disoriented or confused. Cognitively, they can have impaired judgement and reaction time, memory loss, and difficulty with problem-solving. Long-term … Read more