We all experience the world differently through our senses. What excites one person, such as riding a rollercoaster or listening to music whilst working, might overwhelm another person who prefers calm and quiet.
And they can change! After a stressful day, a noisy shop might feel unbearable, while on a good day it's no problem at all.
Some people take in a lot of sensory information (over-responsive), which means that might notice detail others might miss. But when there's too much of this sensory information, it can also lead to feelings overwhelmed, anxious or frustrated. Others take in less sensory information (under-responsive) and may actively seek out more visual information, sounds, textures, or movement.