Please give me a list of challenges to do. It can be ANYTHING appropriate.

What do you mean by appropriate?

By appropriate I mean something not stupid or close to impossible.

for example, my younger brother challenged me to take my pants off and walk outside. I AM NOT GOING TO DO THAT. THAT IS JUST STUPID. Neither something like this: serve me (Although you can say serve SOMEONE for 1 day)

And not something like this, learn to speak a language in 1 day. That is close to impossible.

That challenge must have endings, for example, instead of saying hold your breath underwater, say hold your breath underwater for 2 minutes.

The answer with the most challenges wins!