Why Does Life Speed Up As You Get Older?

When you were seven years old, summer lasted forever. Now you are an adult and somehow yesterday was March and it is already June. You blinked and an entire season vanished. Everybody keeps saying it. Where did the time go. The time did not go anywhere. Your brain did. In this video we explore the two biological mechanisms that make life feel like it is accelerating as you get older. The first is your neural clock — the firing rate of your neurons that peaks in childhood and slows every year for the rest of your life. The second is memory density — the reason childhood felt so vast and why adult years disappear. We also cover Adrian Bejan's 2019 Duke University study that put hard physics behind this, the skydiver research showing how fear stretches time, and the paradox that means you cannot have both slow moments and long memories at the same time. The clock on the wall has not changed speed not even once. But the one inside your head has been slowing down since the day you were born. This video is for educational purposes only.