Memes😂 on Instagram: "Your brain uses about 20% of your body’s total energy — even when you’re doing nothing. Although it makes up only about 2% of your body weight, your brain is one of the most energy-hungry organs you have. Even while resting, daydreaming, or sleeping, it’s firing neurons, maintaining connections, regulating your body, and processing internal signals. That constant energy demand is one reason mental fatigue feels real, even without physical effort. Thinking, rememberi