how many hours of rem sleep should you have

Most adults should aim to get about 20-25% of their total sleep time as REM sleep. This translates to roughly 1.5 to 2 hours of REM sleep per night if they are getting the recommended 7 to 9 hours of total sleep. Since the average adult needs about 7 to 9 hours of sleep per night, spending around two hours in REM sleep is generally considered adequate for brain function, memory consolidation, and emotional health. The amount of REM sleep can vary by age, lifestyle, and health, and it tends to decrease as people get older. Ensuring solid overall sleep duration helps support sufficient REM sleep time.