You can do anything for 15 minutes.
I think I've heard that somewhere before.
Can I do something for 15 minutes???
Can you???
Will I try it????
Do you want to give it a go?
If not for 15' - how long will you aim for?
That's the challenge.
Take the challenge.
Set the timer.
Tell us what you did for 15 minutes (or your chosen time challenge).