system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do my finger tips occasionally feel like they get no traction/grip, like they're more smooth than normal.
gpt
the majority of the time it is just because your hands are dry. Throughout the day, you hands naturally get some oils etc... on the surface that help you get a better grip things like paper.

That's why you often see people lick their finger or thumb to turn a page on a book.

Dry hands like this can be caused by things like taking a shower, washing your hands etc... Also the air is usually drier in the winter which doesn't help.

To prevent this you could maybe just use some moisturizing hand lotion.