We lose an hour when Daylight Saving Time (DST) begins. We gain an hour when it finishes. In the spring, Daylight Saving Time robs us of an hour of sleep. Therefore, we lose one day's worth of sleep in the spring. However, since it is easier to regain lost sleep than to start with nothing, this loss is only apparent.
According to the National Sleep Foundation, people need between seven and nine hours of sleep per night to be healthy. Since people tend to sleep more in the fall than in the spring, this loss of an hour of sleep isn't as bad as it sounds. Also, since people require less sleep during summer months, they can make up for this loss later in the year.
However, if you are sleeping less than eight hours a night, you are putting your health at risk. You should try to get more sleep every night.
Sleep plays a huge role in our physical and mental well-being. Without proper rest, we become weaker and more prone to illness. When we lack sleep, we also tend to make worse decisions and have impaired memory and cognition. Sleep is also important for growing children: without it, they would not grow physically or academically.
So, yes, we lose sleep in the spring.
Daylight Saving Time (DST) is the practice of advancing the clocks by one hour from standard time during the summer months and back again in the fall to make greater use of natural daylight. Almost everyone anticipates "falling back" and grabbing that additional hour of sleep in the autumn. However, it may come as a surprise that many countries don't have complete agreement on when to adjust the clock forward or back. In fact, there are several countries that change their clocks during certain seasons, but not at all other times.
There are two reasons for changing the time in spring and fall. The first is solar activity. As we know, Earth's rotation causes its day and night cycles to change over time. Because sunlight is visible light that travels at about 300,000 km/s, it takes Earth about 24 hours to rotate once around its axis. But due to the tidal force of Earth's moon, which is about 1/6th that of Earth's gravity, Earth's rotation is slowed down by about 2 minutes every 100,000 years or so. This is called "lunar influence". The amount of lunar influence varies between places - more near the moon and less far away - but on average, Earth's rotation is slowed down by about 15 seconds per century.
This means that if you were to watch the sunset each year exactly at the same time, it would take longer and longer until sunrise came again.
Daylight Saving Time (DST) Typically, regions that adopt daylight saving time advance clocks by one hour towards the start of spring and return them to regular time in the autumn. DST, in effect, causes an hour of lost sleep in the spring and an hour of increased sleep in the fall. The adjustment helps reduce energy use - computers don't need more power used at night, and fewer electric lights means less electricity consumed overall - and it also promotes plant growth due to more sunlight during the day.
Studies have shown that people who live in countries that use DST tend to be more tired during the first few days back from it compared with those who live in countries that don't use DST. This is because their bodies are not used to waking up an hour earlier every morning while they're on DST, which can lead to some people sleeping in and others getting up too early.
However, after about a week, your body gets used to the change and starts running on standard time instead of DST, which leads to people feeling better and able to function better during the day. They report being more productive and having more energy than before DST started. This is because they aren't wasting any time coming down from their nighttime energy boost and starting the day feeling groggy.
Some people may find that DST interferes with their sleep schedule, but this only happens if you are going from DST to standard time or vice versa.