Habits help our brains save time and energy. When you repeatedly do something, like brushing your teeth or tying your shoes, your brain learns to do it automatically without much thought. It’s like memorizing the words to your favorite song—you can sing it effortlessly, even years later, without needing to think about every word.
Quality sleep can be a huge part of how you feel every day. Learn about the science of sleep and dreams. Best of all, learn some new practices to boost your sleep.
In humans, it is called the circulatory system. In machines, it is called a hydraulic system.
Copper was one of the first metals humans ever used, marking such an important moment in history that we named an entire period after it: the Copper Age.
