how long should i be in deep sleep

The recommended duration of deep sleep for a healthy adult is about 1.5 to 2 hours per night, which corresponds to approximately 15 to 25 percent of a total sleep time of 6 to 8 hours. This deep sleep typically occurs in cycles throughout the night and is most abundant in the first half of the sleep period. Deep sleep is crucial for physical and mental recovery, tissue repair, immune system strengthening, and hormone release. Getting less than this amount regularly can result in feeling exhausted and less restored. Adults who sleep the recommended 7 to 9 hours usually get about 40 to 110 minutes of deep sleep, depending on individual factors such as age and activity level. Deep sleep decreases with age but is essential for overall health and wellbeing. In summary, aim for 1.5 to 2 hours of deep sleep each night within a total of 6 to 8 hours of sleep to feel rested and rejuvenated.