"Deep sleep builds your immune system, and REM sleep regulates and fine-tunes it," says Darwall-Smith agrees. During deep ...
However, some research shows that major stressors may increase REM sleep but reduce deep sleep. REM rebound, which is when we ...
we’re also regulating our mood and consolidating our memories. Rapid eye movement, or REM, sleep was discovered in 1953—more than 15 years after stages 1 through 4 had been mapped—by Eugene ...