It is important to get a deep enough sleep. So, how do you know if you have slept? You can check your sleep patterns or brain waves using a sleep monitoring device. It’s more helpful to pay attention to whether you’re feeling tired or refreshed when you wake up than a sleep tracker.
Kendra Becker, a sleep medicine expert at Kaiser Permanente, California, USA, said, “It is good to check every day that you are getting enough sleep for 7 to 8 hours a day. “If you don’t have the right environment, you may have trouble getting enough sleep.”
If you sleep in an environment that emits blue light that your brain interprets as sunlight, such as a TV or other electronic device, you may not be able to get a deep sleep. In addition, maintaining a balanced diet in daily life, regular exercise, use of meditation applications, and healthy lifestyle habits such as electromagnetic wave blocking are effective when falling asleep sufficiently deep. It is also important to have a regular bedtime, keep the light and temperature of the room low, and avoid caffeine and alcohol before bedtime.
Adequate sleep is also important for body recovery. Deficiencies in certain sleep stages can lead to reduced immunity, hormonal dysregulation and cognitive decline, experts advise.
Because many important hormonal adjustments occur during sleep, the body relies on deep sleep for optimal functioning. Insulin is also included. It also helps control blood sugar levels by regulating the amount of glucose in the blood. Hormones related to appetite, thyroid hormones, and stress hormones also change during sleep.
Deep sleep also modulates immune system function. During deep sleep, your blood pressure, heart rate and respiration rate are low, so you are relaxed, and in the process other systems are strengthened, giving you an opportunity to recharge.
Deep sleep accounts for an average of 13-23% of total sleep in adults. It is said that 13 to 23% (at least 1 hour) of deep sleep is sufficient for 8 hours of sleep.