Your brain generates enough electricity to power a small LED light bulb.

The human brain is a biological powerhouse containing approximately 86 billion neurons. Each neuron communicates through electrical impulses called action potentials. These impulses are created by the movement of sodium and potassium ions across cell membranes. While a single neuron produces a tiny amount of voltage, the collective activity of billions of neurons creates a significant electrical output.Research conducted by neuroscientists at institutions like MIT and the Allen Institute for Brain Science confirms that the brain operates on about 20 watts of power. This is remarkably efficient considering the brain performs trillions of operations per second. For comparison, a standard desktop computer might require 100 to 200 watts to perform far less complex tasks. The brain's energy consumption remains relatively stable whether you are sleeping or solving a complex math problem.This electrical energy is fueled by glucose and oxygen, which the brain consumes at a disproportionate rate. Although the brain accounts for only 2% of an adult's body weight, it utilizes roughly 20% of the body's total energy supply. This constant energy demand is why even a brief loss of oxygen can lead to immediate neurological issues. The 12 to 25 watts generated is specifically the electrical equivalent of the metabolic work being done by your gray and white matter every second.