PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -NREM sleep constitutes about 75 to 80 percent of total time spent in sleep, and REM sleep constitutes the remaining 20 to 25 percent.

Detailed explanation-2: -We need the most REM sleep as infants and children, when our brains are still developing. Newborn babies spend eight hours in REM sleep each day. By adulthood, we only need an average of two hours of REM sleep each night.

Detailed explanation-3: -It’s estimated that newborns spend about 40%-70% of their sleep in REM. That translates to, on average, 8-11 hours per day in REM. As we age, REM sleep lessens. Children spend about 25%-30% of their sleep in REM, and adults spend 15%-20% of their sleep in this stage.

Detailed explanation-4: -Within each sleep cycle, we move through different stages of sleep. These include three stages of non-rapid eye movement (NREM) sleep, which make up about 75% to 80% of the night, and one stage of rapid eye movement (REM) sleep, which makes up the remaining 20% to 25%.