In traditional Chinese medicine, overthinking is the consumption of qi and blood. Many people think that overthinking is a consumption of the brain, but the prerequisite for the normal functioning of the brain is sufficient blood supply, provided by the heart.
Therefore, when we overthink, think, and miss, we need to expend a lot of effort to maintain the functioning of our thinking, and over time, it will inevitably damage our efforts. The heart is the master of the gods. When the heart loses its efforts and cannot hide the gods, a common phenomenon occurs: if you overthink, you will not be able to sleep. This is because the heart cannot hide the gods and the mind cannot be peaceful.
在中医看来，思虑过度就是在消耗气血。很多人觉得思虑过多是脑部的消耗，但大脑功能正常发挥的前提是有足够的血液供养，由心提供。
因此当我们过度思考、思虑、思念的时候，都需要消耗大量的心血去维持我们思维的运转，久而久之，必会耗伤心血。心主神明，心血亏了，心藏不住神，就会出现一个大家常见的现象：想多了会睡不着，这就是心藏不住神，神志不能安宁。