Thinking is something we do every second of our lives. To think is to analyze what you’re about to do or how you’re going to do it. The phrase “think before you act.”, Is mostly saying to analyze what you’re about to do. That’s just an example though. You think with a nerve system in your brain. When you think, your brain starts functioning in a way where you know how you’re going to do something.
An example of when you think is when; let’s say you’re working on a quiz. You start thinking on what the answer might be, and as you start solving the problem, your brain functions, and well you’re basically thinking. But, thinking isn’t only to when you’re about to do something like when you react, it’s also when you think of an object or a person. When you think, your brain is like a factory, trying to tell you how to do things and what you’re going to do.