Stairs are steeper.
Groceries are heavier.
And everything is farther away. Yesterday I walked to the corner and was dumbfounded to discover how long our street had become. And that's not all. People are less considerate now, especially the young ones. They speak in whispers all the time, and if you ask them to speak up, they just repeat themselves, endlessly mouthing the same silent message until they're red in the face and exhausted.