Here’s a thought: What IS a thought? I know it involves my brain, and my brain is made of neurons. And my brain’s neurons are listening to other neurons all over my body. But how do those neurons actually work? Maybe you’ve heard that it involves electricity, but does that mean you’ve got little zaps and lightning bolts running through your veins like Pikachu? Don’t worry, I’m here to set you straight on what a neuron is, what an action potential is, and how fast your nervous system really communicates.