Is it true that everyone needs 8 hours of sleep?

Mar 24, 2022 ... Sleep deprivation is a condition that occurs if you don't get enough sleep. Sleep deficiency is a broader concept. It occurs if you have one or more of the ... Oct 31, 2019 ... New research from Boston University suggests that tonight while you sleep, something amazing will happen within your brain. Importance of sleep, what are the signs of excessive sleepiness, amount of sleep needed, what causes sleep problems, how environment and behavior affect a ... Feb 25, 2025 ... Most of your dreaming occurs during REM sleep, although some can also occur in non-REM sleep. Your arm and leg muscles become temporarily ... Oct 29, 2024 ... Traumatic Brain Injury and Sleep Problems: What happens? Sleep is not a settled science. There's a lot we know, and even more that we don't know ... Mar 7, 2025 ... ETH Zurich researchers found that pupil size changes during sleep, indicating shifts in brain activity. This could help diagnose sleep and ... Sep 23, 2024 ... When you don't sleep, it can effect your cognitive performance -- your reaction time, judgment, mood, and decision making. Aug 9, 2023 ... Smoking may provide temporary benefits, like having a sedative effect, but the long-term risks make it unsuitable as a sleep aid. Feb 6, 2025 ... The next stage of deep sleep is when most dreaming occurs. During REM sleep the brain tries to organise the information we have received ... Nov 25, 2015 ... What happens to your body when you fall asleep immediately following a meal? Find out if it's unhealthy and discover foods you can eat ...