2 hours Deep sleep is essential for health and wellbeing. Most adults need around 1.5–2 hours of deep sleep per night. The Centers for Disease Control and Prevention (CDC) advise adults aged 18–60 years to aim for at least 7 hours of sleep per night. Around 25% of this should be deep sleep.

Completing five cycles a night means you'd get 7.5 hours of sleep, while six full cycles translates to about 9 hours of sleep. Ideally, you want to wake up at the end of a sleep cycle instead of in the middle of it - that's because you'll typically feel more refreshed and energized if you wake up at the end of a cycle.

8 tips for deeper sleep

1. Get moving. Physical activity isn't just good for your heart, it can also ease you into deeper sleep.
2. Fiber up.
3. Hold off on caffeine.
4. Establish a bedtime routine.
5. Tune into white noise.
6. Try relaxation exercises.
7. Keep stress and anxiety in check.
8. Spruce up your sleep space.

There is no one amount of deep sleep that is normal. You spend 10% to 25% of your time asleep in deep sleep. So, if you need eight hours of sleep, the normal amount of deep sleep would be 48 minutes to two hours. But this number can change from night to night.

While all stages of sleep are necessary for good health, deep sleep offers specific physical and mental benefits. During deep sleep, your body releases growth hormone and works to build and repair muscles, bones, and tissue. Deep sleep also promotes immune system functioning.

An average sleep cycle lasts about 90 minutes. Ideally, you need four to six cycles of sleep every 24 hours to feel fresh and rested. Each cycle contains four individual stages: three that form non-rapid eye movement (NREM) sleep and one rapid eye movement (REM) sleep.

six hours A full night's sleep will include five or six cycles, while a disturbed, restless night consists of fewer. If you feel like four cycles is too little (six hours of sleep) but five cycles is too much (7.5 hours of sleep) then try to make sure you wake up in stage 1 or 2 of sleep which are lighter phases of sleep.

How to Increase Deep Sleep: 10 Tips + Benefits

1. Work Out Daily.
2. Eat More Fiber.
3. Find Your Inner Yogi.
4. Avoid Caffeine 7+ Hours Before Bed.
5. Resist that Nightcap.
6. Create a Relaxing Bedtime Routine.
7. Make Your Bedroom a Sleep Sanctuary.
8. Listen to White and Pink Noise.

How Many Hours Of Deep Sleep Do You Need? In adults, 20% of total sleep time is spent in deep sleep (stage 3). Going with the recommended 7-9 hours of sleep each night, that means the average adult needs 84-108 minutes or 1.4-1.8 hours of deep sleep each night.

How to Increase Deep Sleep: 10 Tips + Benefits

1. Work Out Daily.
2. Eat More Fiber.
3. Find Your Inner Yogi.
4. Avoid Caffeine 7+ Hours Before Bed.
5. Resist that Nightcap.
6. Create a Relaxing Bedtime Routine.
7. Make Your Bedroom a Sleep Sanctuary.
8. Listen to White and Pink Noise.

Sleep Cycle uses a patented algorithm for sound detection. By placing your phone near your bed, the microphone in your device will listen to your sounds, such as breathing, moving and snoring to name a few, through this highly sensitive sound detection method.

roughly 90 to 110 minutes Approximately 75% of sleep is spent in the NREM stages, with the majority spent in the N2 stage.[14] A typical night's sleep consists of 4 to 5 sleep cycles, with the progression of sleep stages in the following order: N1, N2, N3, N2, REM.[15] A complete sleep cycle takes roughly 90 to 110 minutes.

The average length of the first NREM-REM sleep cycle is 70 to 100 minutes. The second, and later, cycles are longer lasting - approximately 90 to 120 minutes (Carskadon and Dement, 2005). In normal adults, REM sleep increases as the night progresses and is longest in the last one-third of the sleep episode.

Approximately 75% of sleep is spent in the NREM stages, with the majority spent in the N2 stage.[14] A typical night's sleep consists of 4 to 5 sleep cycles, with the progression of sleep stages in the following order: N1, N2, N3, N2, REM.[15] A complete sleep cycle takes roughly 90 to 110 minutes.

Here is the kicker: A person who only gets 4 cycles of undisturbed sleep (6 hours) will actually be much more rested than a person who has slept for 8-10 hours but who has not been allowed to complete any one cycle because of being awakened before it was completed.

Here are a few tips to help you sleep 8 hours in 3 hours and still feel active:

1. Follow a regular sleep schedule.
2. Get regular exercise.
3. Limit caffeine intake.
4. Manage your stress.
5. Develop a good bedtime routine.
6. Drink chamomile tea.
7. Bedtime snacks.
8. Get the environment right.