As we grow older, it can often feel like time goes by faster and faster. ... Focusing on visual perception, Bejan posits that slower processing times result in us perceiving fewer 'frames-per-second' – more actual time passes between the perception of each new mental image. This is what leads to time passing more rapidly.

Why does time pass fast?

So, when you are young and experiencing lots of new stimuli—everything is new—time actually seems to be passing more slowly. As you get older, the production of mental images slows, giving the sense that time passes more rapidly. ... Another factor in time's perceived passage is how the brain develops.

How do you stop time from going so fast?