![]() During slow-wave sleep, growth hormone is also secreted, which is particularly important for human development. During this period, body temperature and heart rate fall, and the brain uses far less energy, while restoring its supply of adenosine triphosphate (ATP), a molecule used for the storage and transport of energy. Non-REM sleep begins, eventually moving into slow-wave sleep, or deep sleep. Typically, the body cycles between non-REM and REM sleep over a period of 90 minutes on average, and should occur 4-6 times in a good night's sleep. Non-REM and REM sleep are two categories of sleep that are vastly different. REM sleep is a type of sleep characterized by a number of aspects, including the eye movements it is named for, virtual paralysis of the body, and the occurrence of dreams. REM and non-REM sleepĭuring sleep, the brain expends significantly less energy than it does when a person is awake, particularly during non-REM (rapid eye movement) sleep. Ideally, a person's sleep cycle follows the circadian clock, but sleep can be affected by numerous factors such as light, social timing (when others are awake, when work is required, etc.), naps, genetics, and more. The traveler then feels that it is either later or earlier than what their body is used to, affecting their sleep. An example of this is jet lag, where the body's circadian rhythm is affected due to rapid long-distance travel, which results in the traveler being maladjusted to the local time. The circadian clock exhibits a regular rhythm that corresponds to outside signals (such as night/day) that can persist even if the outside signals suddenly disappear. Sleep timing is largely based on hormonal signals from the circadian clock. The sleep cycle can be defined as the oscillation between non-REM (rapid eye movement) and REM sleep, which will both be discussed below. For the purposes of this page, sleep will primarily be discussed as it relates to humans. The ability to react to stimuli is one of the distinguishing factors between the states of sleep and wakefulness. Sleep describes a recurring state in which the body and mind are at rest, reducing muscle activity, interaction with surroundings, and the ability to react to stimuli. When counting, please deduct the time taken to fall asleep, which can be very different for different people. Use the Hours Calculator if you would like to find out the number of hours slept when you know what times you woke up and went to bed. If you drive to work, take a nap in the car on your lunch break.Use this calculator to compute what time to wake up or go to bed to get a given number of hours of sleep. If you aren't fortunate to work in a place with quiet areas or don't have your own office, be creative. Taking a 20-to-25-minute nap is a great way to recharge your mind and body. If you're able to, take a catnap in the early afternoon - around 2 p.m. Not only will you prevent a severe accident, you may even have a couple of minutes to close your eyes. Instead of taking this risk, rely on public transportation or carpooling. Avoid driving.ĭriving when you're tired is extremely dangerous. In other words, simplify your day as much as possible.īonus tip: If you can, delegate some of these tasks, both professional and personal, to other people. So, why would you stress yourself out and try to complete ten different tasks? Chances are, you can get away with shaving down that list by crossing off your most important ones and leaving items that can wait until another day. When you're tired, you probably aren't at your most productive. ![]() If you want to get the most out of your gum-chewing experience, stick with mint-flavored gum because mint has more of a rousing effect.Ĭhewing gum will give you only a temporary burst, so rely on it at those rare times when you really need a boost. Researchers have discovered that chewing gum can reduce sleepiness, probably because it enhances cerebral activity. Whether that means joking around with co-workers, making phone calls, watching movie trailers on YouTube, playing a computer game or doing a little yoga in your office, spicing up your day will keep you stimulated when you're extremely tired. Throughout the day, change things up so you have some variety to keep you going. If you're at work, try splashing some cold water on your face in the restroom or placing an ice cube on your wrists or temple. Of course, you may not be able to take a cold shower multiple times throughout the day. ![]() A cold shower stimulates your body, and the sudden shock will often help wake you up.
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