The N-Back task is one of the only brain training exercises with peer-reviewed evidence for improving fluid intelligence — not just performance on the task itself. Here’s the science, what it changes, and why 20 minutes a day is enough.
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What Is Cognitive Fitness and Why It Matters More Than IQ
IQ measures what you were born with. Cognitive fitness measures how well your brain performs right now and unlike IQ, it responds directly to how you live, sleep move, and train. Here’s what it is and why it matters more.