how much deep sleep should you get a night

Adults generally need around 1.5 to 2 hours of deep sleep per night, which typically makes up about 10% to 25% of total sleep time. For someone sleeping around 7 to 8 hours, this equates to about 60 to 120 minutes of deep sleep. These amounts can vary slightly based on age, health, and individual factors, with younger people requiring more deep sleep and older adults needing less. Deep sleep is essential for physical repair, immune function, and overall health, so getting enough is important for feeling rested and refreshed.