You may be able to read this text effortlessly but don’t be fooled into thinking that reading is an easy task! It took you many years of learning and long hours in school to become proficient at recognizing letters and words. How does your brain do it? The brain consists of 10 billion cells called neurons. On average, each neuron is connected to 10,000 other neurons through connections called synapses. When you see or think of something, that input stimulus excites a neuron. If the input is high enough, the neuron passes an electric signal to the neighboring neurons, through their connecting synapses. Synapses are chemical bridges that can change their electrical resistance according to how much they are used—lower resistance if the connection between two neighboring neurons is important and higher resistance otherwise. The brain constantly creates such paths of electricity and modifies the synapses along the way, rewiring itself in order to learn and adapt to the environment